ha
1 of 3interjection
ˈhä 
variants or hah
—used especially to express surprise, joy, or triumph
ha
2 of 3abbreviation (1)
hectare
HA
3 of 3abbreviation (2)
1
hemagglutinin
Different circulating influenza A viruses are identified by referring to two signature proteins on their surfaces. One is hemagglutinin (HA), which has at least 15 known variants, or subtypes.
Jeffery K. Taubenberger et al.
Jeffery K. Taubenberger et al.2
hour angle
Synonyms
Interjection
- glory
- glory be
- hallelujah
- hey
- hooray
- hurrah
- hurray
- hot dog
- huzzah
- wahoo [chiefly West]
- whee
- whoopee
- yahoo
- yippee
See all Synonyms & Antonyms 
Example Sentences
Interjection ha! I was right all along!
Recent Examples on the Web San Diego Union-Tribune, 29 Aug. 2022 Hey look, the, the [00:09:00] women involved in this ha have had the ability to get away from it. Leila Atassi, cleveland, 18 July 2022 This is simply because the number five is pronounced ‘ha’. Duncan Madden, Forbes, 15 July 2022 Spieth ha been reportedly dealing with a stomach bug that forced him to skip out on practice on Wednesday. Jayna Bardahl, BostonGlobe.com, 17 June 2022 Posted by the series, the playful promo clip below recalls their first time sharing a milkshake, playing darts, and robbing a bank (ha!). Kelly Corbett, House Beautiful, 16 June 2022 If big, punchy chai spice isn’t your cup of tea (ha!), try Vahdam’s fragrant Saffron Masala Chai instead. Sonia Chopra, Bon Appétit, 26 Apr. 2022 Britt Baker gave her comeuppance by using Lockjaw wit ha Steelers glove. Alfred Konuwa, Forbes, 21 Apr. 2022 Shu, ha and ri are considered stages that someone goes through to become a true master. John Knotts, Forbes, 12 Apr. 2022 See More
Interjection
The people from diverse cultural backgrounds who attended Saturday’s tule boat launch — ha kwaiyo asooq weno, in Kumeyaay — gave many reasons why they were inspired to participate. San Diego Union-Tribune, 29 Aug. 2022 Hey look, the, the [00:09:00] women involved in this ha have had the ability to get away from it. Leila Atassi, cleveland, 18 July 2022 This is simply because the number five is pronounced ‘ha’. Duncan Madden, Forbes, 15 July 2022 Spieth ha been reportedly dealing with a stomach bug that forced him to skip out on practice on Wednesday. Jayna Bardahl, BostonGlobe.com, 17 June 2022 Posted by the series, the playful promo clip below recalls their first time sharing a milkshake, playing darts, and robbing a bank (ha!). Kelly Corbett, House Beautiful, 16 June 2022 If big, punchy chai spice isn’t your cup of tea (ha!), try Vahdam’s fragrant Saffron Masala Chai instead. Sonia Chopra, Bon Appétit, 26 Apr. 2022 Britt Baker gave her comeuppance by using Lockjaw wit ha Steelers glove. Alfred Konuwa, Forbes, 21 Apr. 2022 Shu, ha and ri are considered stages that someone goes through to become a true master. John Knotts, Forbes, 12 Apr. 2022 See More Word History
Etymology
Interjection
Middle English, from Old English
First Known Use
Interjection
before the 12th century, in the meaning defined above
Phrases Containing ha
Kids Definition
ha
interjection
variants or hah
ˈhä
—used to show surprise or joy
Medical Definition
HA
abbreviation
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
Charles J. Russell, The New England Journal of Medicineha
interjection
variants or hah
as in hey
how delightful ha! I was right all along! Synonyms & Similar Words
Relevance
- hey
- hurrah
- wow
- yahoo
- hurray
- whee
- yippee
- gee
- hooray
- hallelujah
- hot dog
- glory be
- whoopee
- wahoo
- huzzah
- glory
- ooh
- gosh
- zowie
- gee whiz
Antonyms & Near Antonyms
- aw
- boo
- alack
- alas