fetus fettling • feu · · · Info · Definitions · Synonyms · Characters · · fetus · · Text Latin · · Script 5 · · Length Definitions · · · (noun) an unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal. Synonyms: foetus. · · Noun Definition 1 Synonyms · · · foetus · · Synonym 1 Characters · · e latin small letter e U+0065 f latin small letter f U+0066 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075