Endorphins: A group of peptide hormones that reduce the levels of pain and affect human emotions Enzyme: A protein that functions as a biochemical catalyst
the branch of engineering science that studies the uses of electricity and the equipment for power generation and distribution and the control of machines and communication
A suffix used, chiefly in law terms, in a passive signification, to indicate the direct or indirect object of an action, or the one to whom an act is done or on whom a right is conferred; as in assignee, donee, alienee, grantee, etc