h
English Thesaurus
1. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure (noun.attribute)
| hypernym | : | physical property, |
| definition | : | any property used to characterize matter and energy and their interactions (noun.attribute) |
| domain category | : | thermodynamics, |
| definition | : | the branch of physics concerned with the conversion of different forms of energy (noun.cognition) |
2. the 8th letter of the Roman alphabet (noun.communication)
| member meronym | : | latin alphabet, roman alphabet, |
| definition | : | the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe (noun.communication) |
3. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second (noun.quantity)
4. 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 (noun.quantity)
| hypernym | : | inductance unit, |
| definition | : | a measure of the property of an electric circuit by which an electromotive force is induced in it (noun.quantity) |
| part holonym | : | abhenry, |
| definition | : | a unit of inductance equal to one billionth of a henry (noun.quantity) |
| part holonym | : | millihenry, |
| definition | : | a unit of inductance equal to one thousandth of a henry (noun.quantity) |
5. 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 (noun.substance)
| hypernym | : | chemical element, element, |
| definition | : | 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 (noun.substance) |
| hypernym | : | gas, |
| definition | : | a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely (noun.substance) |
| hyponym | : | tritium, |
| definition | : | a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms (noun.substance) |
| substance meronym | : | h2o, water, |
| definition | : | binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent (noun.substance) |
| derivation | : | hydrogenate, |
| definition | : | combine or treat with or expose to hydrogen; add hydrogen to the molecule of (an unsaturated organic compound) (verb.change) |
| derivation | : | hydrogenate, |
| definition | : | combine or treat with or expose to hydrogen; add hydrogen to the molecule of (an unsaturated organic compound) (verb.change) |
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