say it: FEE-tuhs
fetus is a noun meaning "an unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal". It carries one recorded sense.
an unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal
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 fetus 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.