international ohm

international ohm

[¦in·tər¦nash·ən·əl ′ōm] (electricity) A unit of resistance, equal to that of a column of mercury of uniform cross section that has a length of 160.3 centimeters and a mass of 14.4521 grams at the temperature of melting ice; it has been superseded by the ohm, and is equal to 1.00049 ohms.