mw

2. A short way to write milliwatt, a very tiny unit of power.

The tiny sensor uses only a few mw of power.

3. A short way to write medium wave, a band of radio waves.

That old radio station broadcasts on the mw band.

4. A short way to write molecular weight, the mass of a molecule.

The scientist noted the mw of the compound in her report.

5. A short way to write microwave, a type of high-frequency wave or oven.

The lab used mw heating to speed up the reaction.