birthline

English

Etymology

birth +‎ line

Noun

birthline (plural birthlines)

  1. (astronomy) A predicted line on the Hertzsprung-Russell diagram that relates the effective temperature and luminosity of pre-main-sequence stars at the start of their contraction.
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.