any of various systems of units for measuring electricity and magnetism
"The professor corrected the student's paper because they had accidentally mixed up the emu values with those from the SI system while calculating magnetic permeability."
large Australian flightless bird similar to the ostrich but smaller
"During our wildlife tour, we spotted an emu sprinting across the outback dust, clearly a massive yet much more compact cousin of the African ostrich."
A cassowary (genus Casuarius).
"The instructor reminded everyone that EMU stands for English Metric Units, not a type of bird."
Initialism of electromagnetic unit.
Clipping of emulator.
Initialism of English Metric Units.
In plain English: Emu is a system used to measure things using meters, grams, and seconds instead of feet, pounds, and minutes.
"The engineer used emu to calculate the length of the bridge supports."
Usage: Emu (noun) refers to a large, flightless bird native to Australia. It's also an initialism standing for English Metric Units, used in some technical contexts to denote a system combining imperial and metric measurements.
Initialism of European Monetary Union.
"The financial report analyzed how the emu's introduction stabilized exchange rates across participating nations."
The word likely comes from the Portuguese term ema, which originally referred to a cassowary or giant rhea but now means ostrich.