Entry 1 sense Webster, 1913

Accelerometer

/ăk-sĕlˌ-ẽr-äm'-ət-ẽr/ · Ac·cel·er·om·e·ter · IPA /ækˌsɛl.əˈɹɑ.mə.tɚ/

01 n. An apparatus for measuring the velocity imparted by gunpowder.

1.
An apparatus for measuring the velocity imparted by gunpowder.