We found 15 dictionaries that define the word hac:

General (6 matching dictionaries)

1. HAC: Collins English Dictionary
2. Hac, hac: Wordnik
3. HAC: Wiktionary
4. HAC: Dictionary.com
5. HAC, Hac: Wikipedia, the Free Encyclopedia
6. HAC: TheFreeDictionary.com

Miscellaneous (2 matching dictionaries)

7. HAc: Acronym Finder
8. AbbreviationZ (No longer online)

Science (2 matching dictionaries)

9. HAC: Extragalactic Astronomy
10. Glossary of Genetic Terms (No longer online)

Slang (1 matching dictionary)

11. H.A.C, HAC: Urban Dictionary

Tech (4 matching dictionaries)

12. HAC: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING
13. AUTOMOTIVE TERMS (No longer online)
14. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)
15. HAC: Power Engineering

Definitions from Wiktionary (HAC) ▸ noun:  (US) Initialism of hearing aid compatibility. Similar: ece, use, parte, ague, alkali, alter, ammonia, Ann, App, Arabia, more... Opposite: no word exists Phrases: pro hac vice, more... Adjectives: glacial, hot, real, prior, dilute, late, old, normal, naac, opc, ionized ▸ Words similar to hac ▸ Usage examples for hac ▸ Idioms related to hac ▸ Wikipedia articles (New!) ▸ Popular adjectives describing hac ▸ Words that often appear near hac ▸ Rhymes of hac ▸ Invented words related to hac