ptomain vs ptomaine

ptomain and ptomaine both are nouns.

Word	Noun	Adjective	Verb	Adverb
ptomain	Yes	No	No	No
ptomaine	Yes	No	No	No

As nouns, ptomain and ptomaine are synonyms defined as:

ptomain and ptomaine: any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria

ptomain (noun)	ptomaine (noun)
any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria	a term for food poisoning that is no longer in scientific use; food poisoning was once thought to be caused by ingesting ptomaines
	any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria