antumbra

发音

/ænˈtʌm.bɹə/
/ˈæn.tʌm.bɹə/

词形变化

antumbrae 复数 antumbrae

释义与例句

n.
  1. 1.

    The region from which an occulting body appears entirely contained within the disc of the light source.

    罕用

词源

From ante- (“before”) + umbra (“shadow”).

来源：wiktionary