occulter

遮光体

词形变化

occulters 复数 occulters

释义与例句

n.
  1. 1.

    Any object, natural or man-made, that blocks the light of an object from an observer, typically used in reference to astronomical events.

    The moon is the occulter of the sun during a solar eclipse.

词源

From occult + -er.

来源：wiktionary