Real Dictionary

henry in American English
the basic unit of electric inductance in the SI and MKS systems, equal to the inductance of a circuit in which the variation of current at the rate of one ampere per second induces an electromotive force of one volt: abbrev. H
noun: the SI unit of inductance, formally defined to be the inductance of a closed circuit in which an electromotive force of one volt is produced when the electric current in the circuit varies uniformly at a rate of one ampere per second

Henry in American English 1
a masculine name: dim. Hal, Hank, Henny; var. Harry; equiv. L. Henricus, Du. Hendrik, Fr. Henri, Ger. Heinrich, It. Enrico, Sp. Enrique; fem. Henrietta
noun: a male given name: from Germanic words meaning “ home” and “ kingdom”

Henry in American English 2
1394-1460; prince of Portugal
noun: a .44 caliber lever-action repeating rifle, marketed in the U.S. in the early 1860s, using metallic cartridges and a tubular magazine capable of holding 16 rounds

Henry in American English 3
Cape promontory in SE Va., at the entrance of Chesapeake Bay

henry in British English
noun: Joseph. 1797–1878, US physicist. He discovered the principle of electromagnetic induction independently of Faraday and constructed the first electromagnetic motor (1829). He also discovered self-induction and the oscillatory nature of electric discharges
noun: the derived SI unit of electric inductance; the inductance of a closed circuit in which an emf of 1 volt is produced when the current varies uniformly at the rate of 1 ampere per second

henry in Electrical Engineering
noun: A henry is a unit of electric inductance that is equal to 1 volt in a closed circuit when the electric current in the circuit varies uniformly at the rate of 1 ampere per second.