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• h
  h

  abbreviation

  hard.
• H
  H

  noun

  the eighth letter of the English alphabet, a consonant.
• h.
  h.

  abbreviation

  harbor.
• H.
  H.

  abbreviation

  (in prescriptions) an hour.

h

¹ American  

abbreviation

1. hard.

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h ² American  

Symbol, Physics.

1. Planck's constant.

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H ³ American  

[eych] / eɪtʃ /

Or h

noun

H's, plural Hs, plural h's, plural hs plural

1. the eighth letter of the English alphabet, a consonant.

2. any spoken sound represented by the letter H or h, as in hot or behave.

3. something having the shape of an H .

4. a written or printed representation of the letter H or h.

5. a device, as a printer's type, for reproducing the letter H or h.

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H ⁴ American  

abbreviation

1. hard.

2. Grammar. head.

3. Electricity. henry.

4. Slang. heroin.

5. high.

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H ⁵ American  

Symbol.

1. the eighth in order or in a series.

2. (sometimes lowercase) the medieval Roman numeral for 200.

3. Chemistry. hydrogen.

4. Biochemistry. histidine.

5. Physics.

   1. enthalpy.

   2. horizontal component of the earth's magnetic field.

   3. magnetic intensity.

6. Music. the letter used in German to indicate the tone B.

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h. ⁶ American  

Or H.

abbreviation

1. harbor.

2. hard.

3. hardness.

4. heavy sea.

5. height.

6. hence.

7. high.

8. Baseball. hit; hits.

9. horns.

10. Also hr. hour; hours.

11. hundred.

12. husband.

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H. ⁷ American  

abbreviation

1. (in prescriptions) an hour.

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H ¹ British  

symbol

1. chem hydrogen

2. physics

   1. magnetic field strength

   2. Hamiltonian

3. electronics henry or henries

4. thermodynamics enthalpy

5. (on Brit pencils, signifying degree of hardness of lead) hard Compare B

   H

   2H

   3H

6. slang heroin

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abbreviation

1. Hungary (international car registration)

h ² British  

/ eɪtʃ /

noun

1. the eighth letter and sixth consonant of the modern English alphabet

2. a speech sound represented by this letter, in English usually a voiceless glottal fricative, as in hat

3. 1. something shaped like an H

   2. ( in combination )

      an H-beam

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h. ³ British  

abbreviation

1. harbour

2. height

3. hour

4. husband

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h ⁴ British  

symbol

1. physics Planck constant

2. hecto-

3. chess See algebraic notation

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Other Word Forms

Noun Inflected Forms

• H's
  plural
• Hs
  plural
• h's
  plural
• hs
  plural

Etymology

Origin of H.

From the Latin word hōra

Example Sentences

The starts of sessions 1 and 3 were separated by 24 h. c, Summary of stability across all 882 SMT-modulated CA1 cells.

From Nature • Mar. 28, 2017

RH Mercury Glass table lamp, 32.25" h. x 7.5" dia.;

From Architectural Digest • Dec. 1, 2014

Hermès porcelain dish, 3.5" l. x 5" h.;

From Architectural Digest • Dec. 1, 2014

Larger engines embraced Chrysler's new "Majestic," a 152 h. p. eight, and Winton's mighty new 16-cylinder V-type Diesel weighing 18,500 lbs. to give 650 h. p. at 700 r. p. m.

From Time Magazine Archive

Present me affectionately to your Aunts, and believe me to be, with solicitude for your conduct and appearance and permanent happiness, Your affectionate father, John H. Peyton. john h. peyton to his wife.

From Memoir of John Howe Peyton in sketches by his contemporaries, together with some of his public and private letters, etc., also a sketch of Ann M. Peyton by Various

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