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annular eclipse an eclipse of the sun in which a ring-shaped portion of the sun remains visible around the moon.
eclipse at a particular observation point, the blocking of light from one celestial body by another, such as the eclipse of the sun by the interposition of the moon, or the eclipse of the moon by the earth's coming between the sun and moon. [2/6 definitions]
ecliptic of or relating to an eclipse. [1/3 definitions]
emersion the reappearance of an astronomical body from concealment by another, as by an eclipse; egress. (Cf. immersion.)
extinguish to eclipse or obscure. [1/4 definitions]
penumbra the partially lighted shadow that surrounds the complete shadow of an opaque body such as the moon during an eclipse. (Cf. umbra.) [1/3 definitions]
solar eclipse an eclipse of the sun, when, at a particular observation point, light from the sun is blocked by the interposition of the moon.
umbra the darkest part of the shadow, from which all light is blocked, cast by one heavenly body on another, as in an eclipse or in the center of a sunspot. (Cf. penumbra.) [1/2 definitions]