Helodermatidae Heloderma • helodermatoid · · · Info · Definitions · Characters · · Helodermatidae · · Text Latin · · Script 14 · · Length Definitions · · · (noun) only known venomous lizards. Synonyms: family Helodermatidae. · · Noun Definition 1 Characters · · H latin capital letter h U+0048 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074