nə̇ˈkād.ə(r) noun
Etymology: New Latin, from Late Latin, killer, from Latin necatus (past participle of necare to kill, from nec-, nex violent death) + -or — more at noxious
1. capitalized : a common genus of hookworms that have buccal teeth resembling flat plates, that include internal parasites of man and various other mammals, and that are prob. of African origin though first identified in No. America — compare ancylostoma
2. -s : any hookworm of the genus Necator