H II region

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English[edit]

English Wikipedia has an article on:
Wikipedia

Alternative forms[edit]

Etymology[edit]

From a being region of space having HII emission lines in its spectrum.

Noun[edit]

H II region (plural H II regions)

  1. (astronomy) A large nebula of gas and plasma of glowing low density in which star formation has recently taken place.

Related terms[edit]

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