Ammonites ammonite • Ammonitess · · · Info · Definitions · Synonyms · Characters · · Ammonites · · Text Latin · · Script 9 · · Length Definitions · · · (noun) one of the coiled chambered fossil shells of extinct mollusks. Synonyms: ammonite, ammonoid. · · Noun Definition 1 Synonyms · · · ammonite · · Synonym 1 ammonoid · · Synonym 2 Characters · · A latin capital letter a U+0041 e latin small letter e U+0065 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 s latin small letter s U+0073 t latin small letter t U+0074