teratogen teratoblastoma • teratogenesis · · · Info · Definitions · Characters · · teratogen · · Text Latin · · Script 9 · · Length 4 · · Syllables Definitions · · · (noun) any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples. · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074