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ha

or hah

[hah] /hɑ/
interjection
1.
(used as an exclamation of surprise, interrogation, suspicion, triumph, etc.)
Origin of ha
1250-1300
1250-1300; Middle English; see ha-ha1

[hah] /hɑ/
noun
1.
the 26th letter of the Arabic alphabet, representing a glottal spirant consonant sound.
Origin
< Arabic

ḥā

[khah] /xɑ/
noun
1.
the sixth letter of the Arabic alphabet, representing a pharyngeal spirant consonant.
Origin
< Arabic

Ha

Symbol, Chemistry, Physics.
1.

ha

1.
hectare; hectares.

h.a.

1.
Gunnery. high angle.
2.
in this year.
Origin
(def 2) < Latin hōc annō

H1

or 1H, Ha

Symbol, Chemistry
1.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for ha
Contemporary Examples
Historical Examples
  • That's why I come, lest this appointment should ha' proved a pitfall to you.

    Rhoda Fleming, Complete George Meredith
  • He doesn't want much medicine; that we keep for our enemies,—ha!

    Thoroughbreds W. A. Fraser
  • ha, theyll say that if I dont give an example myself, my family does!

    Three Plays by Brieux Eugne Brieux
  • "He was to ha' Janet on condeetion that he made the eldership," he fulsomely explained.

  • "I knew it—I'd ha' bet a bar-skin he'd fetch it," cried a third.

    Ella Barnwell Emerson Bennett
British Dictionary definitions for ha

ha1

/hɑː/
interjection
1.
an exclamation expressing derision, triumph, surprise, etc, according to the intonation of the speaker
2.
(reiterated) a representation of the sound of laughter

ha2

symbol
1.
hectare

Ha

abbreviation
1.
Hawaii

h

/eɪtʃ/
noun (pl) h's, H's, Hs
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

h

symbol
1.
(physics) Planck constant
2.
hecto-
3.
(chess) See algebraic notation

H

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: H, 2H, 3H Compare B (sense 9)
6.
(slang) heroin
abbreviation
7.
Hungary (international car registration)

h.a.

abbreviation
1.
hoc anno
Word Origin
Latin: in this year
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ha

c.1300, natural expression of surprise, distress, etc.; found in most European languages; in Old English, Greek, Latin, Old French as ha ha. A ha-ha (1712), from French, was "an obstacle interrupting one's way sharply and disagreeably;" so called because it "surprizes ... and makes one cry Ah! Ah!" [Alexander Le Blond, "The Theory and Practice of Gardening," 1712].

H

the pronunciation "aitch" was in Old French (ache "name of the letter H"), and is from a presumed Late Latin *accha (cf. Italian effe, elle, emme), with the central sound approximating the value of the letter when it passed from Roman to Germanic, where it at first represented a strong, distinctly aspirated -kh- sound close to that in Scottish loch. In earlier Latin the letter was called ha.

In Romanic languages, the sound became silent in Late Latin and was omitted in Old French and Italian, but it was restored in Middle English spelling in words borrowed from French, and often later in pronunciation, too. Thus Modern English has words ultimately from Latin with missing -h- (e.g. able, from Latin habile); with a silent -h- (e.g. heir, hour); with a formerly silent -h- now often vocalized (e.g. humble, humor, herb); and even a few with an excrescent -h- fitted in confusion to words that never had one (e.g. hostage, hermit).

Relics of the formerly unvoiced -h- persist in pedantic insistence on an historical (object) and in obsolete mine host. The use in digraphs (e.g. -sh-, -th-) goes back to the ancient Greek alphabet, which used it in -ph-, -th-, -kh- until -H- took on the value of a long "e" and the digraphs acquired their own characters. The letter passed into Roman use before this evolution, and thus retained there more of its original Semitic value.

Online Etymology Dictionary, © 2010 Douglas Harper
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ha in Medicine

h abbr.
The symbol for Planck's constant..

H
The symbol for the element hydrogen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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ha in Science
h  
  1. Abbreviation of height

  2. The symbol for Planck's constant.


H  
  1. The symbol for henry.

  2. The symbol for hydrogen.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for ha

H

noun

Heroin (Narcotics)

Related Terms

big h

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for ha

ha

1.
Hausa
2.
hectare
3.
hour angle

HA

1.
headache
2.
Hydrocephalus Association
3.
hyperalimentation

h

1.
height
2.
hour
3.
Planck's constant

H

1.
enthalpy
2.
Hamiltonian
3.
handicapped accessible
4.
haze
5.
henry
6.
heroin
7.
Hispanic
8.
hit
9.
humidity
10.
Hungary (international vehicle ID)
11.
hydrogen

h.a.

Latin hoc anno (this year)
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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4
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