preformation preformant • preformationary · · · Info · Definitions · Synonyms · Characters · · preformation · · Text Latin · · Script 12 · · Length 4 · · Syllables Definitions · · · (noun) a theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell. Synonyms: theory of preformation. · · Noun Definition 1 Synonyms · · · theory of preformation · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074