There are 3 definitions of h in English:

h1

Line breaks: h
Pronunciation: /eɪtʃ
 
/

abbreviation

1(In measuring the height of horses) hand(s): pinto pony gelding—quiet, 13.3 h, great with kids
1.1 [in combination] (In units of measurement) hecto-: wine production reached 624,000 hl last year
1.2British (With reference to sporting fixtures) home: September 14 Bradford City (h)
1.3Horse.
1.4(Especially with reference to water) hot: nine rooms, all with h & c
1.5Hour(s): breakfast at 0700 h

symbol

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1 Physics Planck’s constant.
1.1 () Physics Planck’s constant divided by 2π.

Definition of h in:

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Word of the day keek
Pronunciation: kiːk
verb
peep surreptitiously

There are 3 definitions of h in English:

H2

Line breaks: H
Pronunciation: /eɪtʃ
 
/
(also h)

noun (plural Hs or H's)

1The eighth letter of the alphabet.
1.1Denoting the next after G in a set of items, categories, etc.
1.2 (h) Chess Denoting the file on the right-hand edge of the board, as viewed from White’s side.
2A shape like that of a capital H: [in combination]: a widened H-strap for lateral support
3 Music (In the German system) the note B natural.

Definition of h in:

There are 3 definitions of h in English:

H3

Line breaks: H
Pronunciation: /eɪtʃ
 
/

abbreviation

1Hard (used in describing grades of pencil lead): a 2H pencil
1.1Height (in giving the dimensions of an object): H 195 cm by W 107 cm by D 52 cm
1.2 Physics Henry(s).
1.3 informal Heroin: ‘Tell me it’s not heroin.’ ‘It’s not H’
1.4Hungary (international vehicle registration).
1.5British (On signs in the street) hydrant.

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1 Chemistry Enthalpy.
1.1The chemical element hydrogen.
1.2 Physics Magnetic field strength.

Definition of h in: