H

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Table of contents

1 Letter

1.1 Other Forms
1.2 See Also
1.3 Noun
1.4 Homographs

Letter

H, h

The eighth letter of the English alphabet, preceded by G and followed by I, and representing /h/.
A symbol of the IPA, representing a voiceless glottal fricative.

Other Forms

With circumflex: ĥ
With stroke: ħ
With caron: ȟ
With hook: ɦ
With dot above: ḣ
With dot below: ḥ
With diaeresis: ḧ
With cedilla: ḩ
With breve below: ḫ

Noun

The eighth letter of the English alphabet (aitch).
(chemistry) symbol for hydrogen
(physics) symbol for a henry, a unit for measurement of electrical inductance
(slang) term for heroin.

Homographs

Η (Greek eta)
Н (Cyrillic en)

pl:h

WordNet Definitions

five

1. hydrogen, H, atomic number 1 -- (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).
2. henry, H -- (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. Planck's constant, h -- (the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10\-34 joule-second).
4. H -- (the 8th letter of the Roman alphabet).
5. heat content, total heat, enthalpy, H -- ((thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure; "enthalpy is the amount of energy in a system capable of doing mechanical work").

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