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

plural

H's, Hs, h's, hs

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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Etymology

Origin of H.

From the Latin word hōra

Example Sentences

The UK's cold weather comes as the EU's climate service says global warming has for the first time h exceeded the 1.5C warning limit across an entire year.

From BBC • Feb. 9, 2024

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

From Salon • Jan. 31, 2024

Additionally, the capacity retained after 1000 cycles at 5 A g−1 was 558.5 mA h g−1.

From Science Daily • Oct. 12, 2023

At the beginning of a word, the letter h is never followed by a consonant.

From Textbooks • Apr. 19, 2023

But what if the h sounds like a vowel or the u sounds like a consonant?

From "Woe Is I" by Patricia T. O'Conner

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