Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
fifo is a noun meaning "inventory accounting in which the oldest items (those first acquired) are assumed to be the first sold". It carries one recorded sense.
inventory accounting in which the oldest items (those first acquired) are assumed to be the first sold
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 fifo come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.