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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

Inflected Forms

noun

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

Etymology

Origin of H.

From the Latin word hōra

Example Sentences

The Trainspotting actor described his character as "a hero with a small h" who "fundamentally wants Corby to succeed".

From BBC • Mar. 1, 2025

Bee balm is a great addition to any existing pesto recipe as it blends well wit h basil.

From Salon • Jan. 31, 2024

Unlike previous studies, the authors highlight that one of the strengths of this new research is that they used the MET h as the objective physical activity measurement to take all daily activities into account.

From Science Daily • Sep. 21, 2023

The unemployment rate h as dropped to 3.4%, the lowest level in 53 years, and job openings remain high.

From Seattle Times • Feb. 13, 2023

Profesora Shields had told us to pronounce the letter h, even at the beginning of words.

From "The Book of Unknown Americans" by Cristina Henríquez

Related Words

• dope
• drug
• narcotic
• smack