a line that touches a curve at only one point
Our word "touch" is from the Latin tangere, from which comes "
," and also "tag," an old touching game.Smith, David Eugene
tangere (to touch) + ent (suffix forming adjectives)
Tangram is a game that sounds and looks like it also comes from "tangere" because its object is to put seven flat shapes into specific designs without overlapping the pieces. But the more likely origin of the name is: tang (from the Tang Dynasty of China) + gram (suffix forming nouns about instruments for recording or something written).
of superficial relevance if any
tangere (to touch) + ent (suffix forming adjectives) + ial (suffix forming adjectives)
Of the four single-word adjectives used to describe the nature of the discussions, "tangential" is the one most closely touching the topic. The other words have roots that suggest a lack of a central point or a movement away from a concrete, stable point.
ratio of the adjacent to the opposite side of a right-angled triangle
The only gleam of intelligence Old
showed was when he said that squaring the circle was too easy.James, Henry
complement (that which completes) + tangere (to touch) + ent (suffix forming adjectives)
The breakdown of the word suggests that "tangent" also functions as an adjective that is synonymous with "tangential." But here, "Cotangent" functions as a proper noun that refers to a character who enjoys geometry.
perceptible by the senses, especially the sense of touch
This is also the easiest technique to utilize, because gifts come in many forms, from non-material compliments, to
material gifts.Time (May 14, 2014)
tangere (to touch) + ible (suffix forming adjectives expressing ability or capacity)
"Tangible" and "material" are both functioning as adjectives to describe "gifts" but one word would've been enough to make the point, especially since the sentence already sets up the contrast between "non-material compliments" and touchable gifts.
assets that are saleable though not material or physical
Your sales team is responsible for applying the human factor to the equation—this
can make or break any deal.Forbes (Feb 10, 2014)
in (not) + tangere (to touch) + ible (suffix forming adjectives expressing ability or capacity)
The breakdown of the word suggests that it normally functions as an adjective, but here, it is used as a noun to refer to a valuable human quality that is untouchable and often indefinable.
consideration in dealing with others
This personal political situation, involving far more subtle loyalties, requires gentler
yet an equally firm hand.The Guardian (Jul 24, 2013)
"Tactus" is the past participle of "tangere" and means "a touch, handling, sense of touch."
"Subtle" is an adjective often connected to tact; its Latin roots are: sub (under) + tela (web, net, warp of a fabric). This image suggests that tact should take on a gentle and careful touch to avoid breaking or getting caught in strands or threads.
lacking what is considerate in dealing with others
The "touchiness" of the world in general affords
persons a perennial source of offended astonishment.Cholmondeley, Mary
tactus (see note for "tact") + less (suffix meaning lacking)
As this and the previous example sentences suggest, having tact requires knowing how gently or firmly to touch others. But this example sentence also makes the observation that people can be so sensitive or touchy that they become easy targets for the tactless to offend and shock.
producing a sensation of touch
A sensory room contains lights and music and
objects to stimulate the senses.BBC (Dec 28, 2013)
tactus (see note for "tact") + ile (suffix indicating ability or capacity)
Compare with "tactual"--both definitions fit each adjective so the two are synonymous. The breakdowns of the words are also similar, but the meaning of the suffix "ile" suggests that "tactile" might be a better fit for the example sentence describing the evolution of primates.
of or relating to or proceeding from the sense of touch
In the Primates the evolution of intellect and the evolution of
appendages go hand in hand.Tyndall, John
tactus (see note for "tact") + al (suffix forming adjectives)
The phrase "go hand in hand" evokes a literal image of primates holding hands, but it is used figuratively to refer to the cooperative development of intelligence and the sense of touch. The example sentence suggests that tactual exploration triggers factual ideation.
lacking nothing essential, not damaged
in (not) + tactus (see note for "tact")
The adjective also has a sexual connotation that applies to the competence of a man (being whole) or the virginity of a woman (being untouched).
a communicative interaction
However, doctors are discovering that, for appropriate patients, alternative forms of patient
can be very effective: email, telephone, video-conferencing, etc.Forbes (May 27, 2014)
com (together) + tactus (see note for "tact")
The interactions between doctors and patients usually involve touching, but the example sentence emphasizes alternative forms of contact that focus more on communication across physical distances.
any disease easily transmitted by contact
In the sci-fi thriller
, a new virus emerges from wildlife and jumps into human beings, wreaking havoc around the world.Time (Oct 16, 2013)
com (together) + tangere (to touch) + ion (suffix forming nouns)
The Latin meaning of "virus" comes from touchable things that seem easily avoidable to prevent contagion: poison, sap of plants, slimy liquid, a potent juice.
easily diffused or spread as from one person to another
But if there can be epidemics of crime or epidemics of fashion, there must be all kinds of things just as
as viruses.The Tipping Point
com (together) + tangere (to touch) + ous (suffix forming adjectives)
Similar to "contagious" the word "epidemic" has a negative tone, but the breakdown into its Greek roots suggests otherwise: epi (among) + demos (people). Among the things that can be contagious epidemics are laughter and happiness.
having a common boundary or edge
The Latin "contiguus" means "near, touching" and comes from the root of "contingere" which comes from: com (together) + tangere (to touch). The adjective can be used to describe common physical boundaries as well as events that are closely connected in time.
determined by conditions or circumstances that follow
The two-year withdrawal plan for Afghanistan is
on the next Afghan president signing a security agreement with the U.S.US News (May 28, 2014)
com (together) + tangere (to touch) + ent (suffix forming adjectives)
The meaning of "contingent" is similar to an "if...then" scenario: If the first domino tips, then that would result in it touching the next domino so that both of them fall; if however the first domino does not tip, then both dominoes remain standing within touching distance but without affecting the other.