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H

PRIMARY MEANINGS OF: H

1
 n
the 8th letter of the Roman alphabet
2
 n
a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
3
 n
a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second
4
 n
(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
FULL DEFINITIONS OF: H
1

n the 8th letter of the Roman alphabet

Synonyms:
h
Type of:
alphabetic character, letter, letter of the alphabet
the conventional characters of the alphabet used to represent speech
2

n a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe

Synonyms:
atomic number 1, hydrogen
Types:
tritium
a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms
Type of:
chemical element, element
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
gas
a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
3

n a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second

Synonyms:
henry
Type of:
inductance unit
a measure of the property of an electric circuit by which an electromotive force is induced in it
4

n (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure

Synonyms:
enthalpy, heat content, total heat
Type of:
physical property
any property used to characterize matter and energy and their interactions
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