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moiety \ˈmoi-ə-tē\ noun: 1 a. one of two equal parts; half, b. one of two approximately equal parts, 2. one of the portions into which something is divided; component, part {an ether molecule with a benzene moiety}, 3. one of two basic complementary tribal subdivisions
Etymology: Middle English moite, from Anglo-French meité, moité, from Late Latin medietat-, medietas, from Latin medius middle
What a strange sounding word.