say it: uh-bree-vee-AY-shuhn
abbreviation is a noun meaning "a shortened form of a word or phrase". It carries 2 recorded senses.
a shortened form of a word or phrase
shortening something by omitting parts of it
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for abbreviation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.