Noun | 1. | emu - any of various systems of units for measuring electricity and magnetism unit, unit of measurement - any division of quantity accepted as a standard of measurement or exchange; "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume" capacitance unit - a measure of the capacity of a circuit component to store charge charge unit, quantity unit - a measure of the quantity of electricity (determined by the amount of an electric current and the time for which it flows) conductance unit - a measure of a material's ability to conduct an electrical charge current unit - a measure of the amount of electric charge flowing past a circuit point at a specific time elastance unit - the reciprocal of capacitance field strength unit - an electromagnetic unit of magnetic intensity flux density unit - a measure of the amount of flux per unit of cross sectional area inductance unit - a measure of the property of an electric circuit by which an electromotive force is induced in it light unit - a measure of the visible electromagnetic radiation magnetomotive force unit - a unit of measurement of magnetomotive force potential unit - a measure of the potential energy of a unit charge at a given point in a circuit relative to a reference point (ground) power unit - a measure of electric power radioactivity unit - a measure of radioactivity resistance unit - the reciprocal of conductance |
2. | ![]() flightless bird, ratite, ratite bird - flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds Dromaius, genus Dromaius - a genus of birds in the order Casuariiformes |