Reference meaning
H
Last updated
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
Related source terms
hydrogenatomic number 1
Other meanings
2. noun
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
3. noun
the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
4. noun
the 8th letter of the Roman alphabet
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 14640434-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.