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1

ha

interjection \ˈhä\

Simple Definition of ha

  • —used especially to express surprise or a feeling of pleasure that you have when you do something or find out about something

Source: Merriam-Webster's Learner's Dictionary

Full Definition of ha

  1. —used especially to express surprise, joy, or triumph

Examples of ha in a sentence

  1. <ha! I was right all along!>



Variants of ha

or hah \ˈhä\

Origin of ha

Middle English, from Old English


First Known Use: before 12th century

Rhymes with ha


2

ha

abbreviation

Definition of ha

  1. hectare




HA

abbreviation

Definition of HA

  1. hour angle




HA Defined for Kids

ha

interjection \ˈhä\

Definition of ha for Students

  1. —used to show surprise or joy <Ha! I knew you'd come.>



Variants of ha

or hah \ˈhä\

Medical Dictionary

HA

abbreviation

Medical Definition of HA

  1. hemagglutinin <Seasonal strains … evade our immune systems after vaccination or previous infection by constantly changing the structure of their hemagglutinin (HA) surface protein.—Charles J. Russell, The New England Journal of Medicine, 20 Oct. 2011>





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