Noun

(countable) the collision of two bodies in order to produce a sound

(countable) the sound so produced

(countable) the detonation of a percussion cap in a firearm

(medicine) the tapping of the body as an aid to medical diagnosis

(music) the section of an orchestra or band containing percussion instruments; such instruments considered as a group

(engineering) the repeated striking of an object to break or shape it, as in percussion drilling

Noun

(-)

The act of persecuting.

A program or campaign to subjugate or eliminate a specific group of people, often based on race, religion, sexuality, or social beliefs.

* {{quote-magazine, year=2012, month=March-April

, author=(Jan Sapp) , title=Race Finished , volume=100, issue=2, page=164 , magazine=(American Scientist) citation , passage=Few concepts are as emotionally charged as that of race. The word conjures up a mixture of associations—culture, ethnicity, genetics, subjugation, exclusion and persecution . But is the tragic history of efforts to define groups of people by race really a matter of the misuse of science, the abuse of a valid biological concept?}}