ab.

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Preposition

1. {{abbreviation of|en|about}}.<ref>{{R:RHCD|page=1}}</ref><ref>{{R:American Heritage Dictionary|edition=1971|page=1}}</ref>

Noun

1. {{abbreviation of|en|antibody}}.<ref>{{cite-book|editor=Thomas, Clayton L.|title=Taber's Encyclopedic Medical Dictionary|year=1940|edition=5th|year_published=1993|publisher=F. A. Davis Company|location=Philadelphia, PA |isbn=0-8036-8313-8|page=1}}</ref>
2. {{abbreviation of|en|abridgement}}.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.