ˈhenrē, -ri noun
( plural henrys or henries )
Etymology: after Joseph Henry died 1878 American physicist
1. : the practical mks unit of inductance equal to the self-inductance of a circuit or the mutual inductance of two circuits in which the variation of one ampere per second results in an induced electromotive force of one volt, the unit being taken as standard in the United States
2. : a unit of inductance that is equal to 1.00049 henries and that was formerly taken as the standard in the U.S. — called also international henry