fundamental measure

a movement in Europe from about 1650 until 1800 that advocated the use of reason and individualism instead of tradition and established doctrine

a period in British history during the reign of Elizabeth I in the 16th century; an age marked by literary achievement and domestic prosperity

a period in British history during the reign of Queen Victoria in the 19th century; her character and moral standards restored the prestige of the British monarchy but gave the era a prudish reputation

(archeology) a period between the Stone and Iron Ages, characterized by the manufacture and use of bronze tools and weapons

(archeology) the period following the Bronze Age; characterized by rapid spread of iron tools and weapons

(archeology) the earliest known period of human culture, characterized by the use of stone implements

the earliest part of the Stone Age marked by the earliest signs of human culture

second part of the Stone Age beginning about 750,00 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC

the oldest part of the Paleolithic Age with the emergence of the hand ax; ended about 120,000 years ago

the time period of Neanderthal man; ended about 35,000 years BC

the time period during which only modern Homo sapiens was known to have existed; ended about 10,000 years BC

middle part of the Stone Age beginning about 15,000 years ago

latest part of the Stone Age beginning about 10,000 BC in the Middle East (but later elsewhere)

the era of Islam's ascendancy from the death of Mohammed until the 13th century; some Moslems still maintain that the Moslem world must always have a calif as head of the community

the time period beginning with the supposed year of Christ's birth

the historic period from about 1600 until 1750 when the baroque style of art, architecture, and music flourished in Europe

the period of history between classical antiquity and the Italian Renaissance

the period of European history at the close of the Middle Ages and the rise of the modern world; a cultural rebirth from the 14th through the middle of the 17th centuries

the early period when Italy was the center of the Renaissance

the transformation from an agricultural to an industrial nation

the historic period (1793-94) during the French Revolution when thousands were executed

a period in the 1920s when African-American achievements in art and music and literature flourished

the historic period (1933-1940) in the United States during which President Franklin Roosevelt's economic policies were implemented

the period after the American Civil War when the southern states were reorganized and reintegrated into the Union; 1865-1877

the reign of Charles II in England; 1660-1685

a period during the 1930s when there was a worldwide economic depression and mass unemployment

the period from 1811-1820 when the Prince of Wales was regent during George III's periods of insanity

the period from 1378 to 1417 during which there were two papacies in the Roman Catholic Church, one in Rome and one in Avignon

the date of Allied victory in Europe, World War II

the date of Allied victory over Japan, World War II

the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)

the property of a body that causes it to have weight in a gravitational field

the linear extent in space from one end to the other; the longest dimension of something that is fixed in place

an amount of time

temperature measured on the absolute scale

(cryogenics) the lowest temperature theoretically attainable (at which the kinetic energy of atoms and molecules is minimal); 0 Kelvin or -273.15 centigrade or -459.67 Fahrenheit

the temperature above which a ferromagnetic substance loses its ferromagnetism and becomes paramagnetic

the temperature at which the water vapor in the air becomes saturated and condensation begins

the lowest temperature at which the vapor of a combustible liquid can be ignited in air

the temperature below which a liquid turns into a solid

the temperature at which a liquid boils at sea level

temperature measured by a mercury thermometer

the normal temperature of room in which people live

temperature just below the boiling point

temperature of the body; normally 98.6 F or 37 C in humans; usually measured to obtain a quick evaluation of a person's health

the absence of heat

the presence of heat

the main mass of a thing

the total mass of living matter in a given unit area

the minimum mass of fissionable material that can sustain a chain reaction

(physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the body

(physics) the mass of a body in motion relative to the observer: it is equal to the rest mass multiplied by a factor that is greater than 1 and that increases as the magnitude of the velocity increases

the property possessed by a large mass

(physics) the mass of a body as measured by its gravitational attraction for other bodies

(physics) the mass of a body as determined by the second law of motion from the acceleration of the body when it is subjected to a force that is not due to gravity

(chemistry) the mass of an atom of a chemical element expressed in atomic mass units

(physics) the mass of a body regarded relativistically as energy

(chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule

the length of the closed curve of a circle

the length of a straight line passing through the center of a circle and connecting two points on the circumference

the length of a line segment between the center and circumference of a circle or sphere

the property of being of long spatial extent

the property of being of short spatial extent

the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles

a period of time during which someone or something is tested

a time period during which something occurs or is expected to occur

an indefinite period of time

a period of time when something (as a machine or factory) is not operating (especially as a result of malfunctions)

a period of time when something (as a machine or factory) is functioning and available for use

a time period when you are required to work

a time period when you are not required to work

a period of illness

a period of time when you are confined to a hospital

a period of time spent traveling

a more or less definite period of time now or previously present

an indefinite period (usually marked by specific attributes or activities)

the time that elapses while some event is occurring

the period of time during which something continues

a period of seven consecutive days starting on Sunday

the middle of a week

a time of unusual pleasure and success

the period during which something is functional (as between birth and death)

the period between birth and the present time

the period from the present until death

a span of 1000 years

a span of 2000 years

the period of time during which a place or position or nation is occupied

a earlier period in someone's life (especially one that they have reason to keep secret)

the length of time a packaged food or drug will last without deteriorating

time period following childbirth when the mother's uterus shrinks and the other functional and anatomic changes of pregnancy are resolved

the period following birth during which milk is secreted

a period of time during which a person is normally in a particular life state

a day reckoned from midnight to midnight

a day or period of time set aside for feasting and celebration

the time after sunrise and before sunset while it is light outside

the time period between dawn and noon

the time after sunset and before sunrise while it is dark outside

the time between sunset and midnight

the period spent sleeping

a period of ignorance or backwardness or gloom

the period immediately before something

the early part of night (from dinner until bedtime) spent in a special way

any period of seven consecutive days

a period of fourteen consecutive days

a time period usually extending from Friday night through Sunday; more loosely defined as any period of successive days including one and only one Sunday

a period of unusually warm weather in the autumn

the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun

the period of instruction in a school; the time period when school is in session

a period of time containing 365 (or 366) days

a period of time occupying a regular part of a calendar year that is used for some particular activity

half a year; a period of 6 months

a period of 2 months

one of the four-year intervals between Olympic Games; used to reckon time in ancient Greece for twelve centuries beginning in 776 BC

a period of five years

a period of 10 years

a period of 100 years

a period of four years

a period of five years

a period of 50 years

a period of 25 years

a fourth part of a year; three months

a time when the Moon presents a particular recurring appearance

the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis

one of the twelve divisions of the calendar year

the middle part of January

the middle part of February

the middle part of March

the middle part of April

the middle part of May

the middle part of June

the middle part of July

the middle part of August

the middle part of September

the middle part of October

the middle part of November

the middle part of December

a time period within which something must be done or completed

a limited period of time

a period of three months; especially one of the three three-month periods into which human pregnancy is divided

a special and memorable period

a time usually late summer characterized by exaggerated news stories about frivolous matters for want of real news

(classical mythology) the first and best age of the world, a time of ideal happiness, prosperity, and innocence; by extension, any flourishing and outstanding period

(classical mythology) the second age of the world, characterized by opulence and irreligion; by extension, a period secondary in achievement to a golden age

(classical mythology) the third age of the world, marked by war and violence

(classical mythology) the last and worst age of the world

time required for one complete cycle of the precession of the equinoxes, about 25,800 years

(sports) the normal prescribed duration of a game

playing time beyond regulation, to break a tie

one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions

the hot period between early July and early September; a period of inactivity

the middle of winter

a recurrent time marked by major holidays

a period of the year marked by special events or activities in some field

a prolonged period of time

a period of time sufficient for factors to work themselves out

a prolonged shortage

a period marked by distinctive character or reckoned from a fixed point or event

the normal time between successive generations

the time during the development of human culture before the appearance of the written word

a period during which something or somebody is dominant or powerful

the continuous period of time during which something (a machine or a factory) operates or continues in operation

an early period of development

an opening time period

a later concluding time period

a period of time considered as a resource under your control and sufficient to accomplish something

a period of time spent sleeping

the period of time during which a contract conveying property to a person is in effect

the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)

there are usually two high and two low tides each day

any distinct time period in a sequence of events

occurring in more than one stage

the period during which someone (especially a guard) is on duty

a period of time during which there is no war

a period of time during which there is armed conflict

a period of time spent in military service

the early (usually calm and harmonious) period of a relationship; business or political

a 15-year cycle used as a chronological unit in ancient Rome and adopted in some medieval kingdoms

the period from 1920 to 1933 when the sale of alcoholic beverages was prohibited in the United States by a constitutional amendment

the period between infection and the appearance of symptoms of the disease

a (future) time of financial need

the period during which you are a novice (especially in a religious order)

the period of greatest prosperity or productivity

the length of time that a movie or tv show runs

the time it takes for a sample of blood to clot; used to diagnose some clotting disorders

the time period during which military and civilian agencies are prepared for an enemy air attack

a period during a parliamentary session when members of British Parliament may ask questions of the ministers

(computer science) the time it takes for a process under computer control to occur

the actual time that it takes a process to occur

a period of time during the school day that is set aside for study

the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)

the time period that is considered best for starting or finishing something