Definition of "moiety" [moi•e•ty]

• A half. (noun)
• A part, portion, or share. (noun)
• Anthropology Either of two kinship groups based on unilateral descent that together make up a tribe or society. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In addition, by combining a flavine mononucleotide with a protein moiety of Warburg's yellow enzyme, Kuhn and Rudy produced the very first partial synthesis of a fully functional enzyme."
• "The role of this conjugate was not clear at the time, though its level was found to be dynamic and change during differentiation, when the histone moiety is subjected to ubiquitination and de-ubiquitination."
• "-- in other words, a moiety of the whiskey he had drunk."