bicuspidate vs bicuspid

bicuspidate is not a noun while bicuspid is a noun.

Word	Noun	Adjective	Verb	Adverb
bicuspidate	No	Yes	No	No
bicuspid	Yes	Yes	No	No

As adjectives, bicuspidate and bicuspid are synonyms defined as:

bicuspidate and bicuspid: having two cusps or points (especially a molar tooth)

bicuspidate (noun)	bicuspid (noun)
	a tooth having two cusps or points; located between the incisors and the molars

bicuspidate (adjective)	bicuspid (adjective)
having two cusps or points (especially a molar tooth)	having two cusps or points (especially a molar tooth)