🝶

Etymology

 * A filled opposition symbol, $⟨☍⟩$

Symbol

 * 1)  symbol for a lunar eclipse, or, more generally (but rarely), for any celestial body found in the shadow of another, such as the timing of Io entering Jupiter's shadow, used by Rømer to calculate the speed of light.
 * Moon crescent symbol (fixed width).svgOpposition symbol.svgSun symbol (fixed width).svg 'moon in opposition to the Sun' (full moon)
 * Moon crescent symbol (fixed width).svgLunar eclipse symbol.svgSun symbol (fixed width).svg 'moon shadowed from the Sun' (i.e. lunar eclipse, commonly abbreviated Lunar eclipse symbol.svg)
 * ⅠLunar eclipse symbol.svgJupiter symbol (fixed width).svg 'Io in Jupiter's shadow'

Synonyms

 * [[file:Eclipse of Moon symbol.svg|24px]] (US Patent Office style manual)

Related terms

 * Occultation symbol.svg (Solar eclipse)