ALL meanings of absorption nebula
ab·sorp·tion neb·u·la
A a - noun absorption nebula a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky. 1
- noun absorption nebula (astronomy) A dark nebula; a diffuse mass of interstellar gas and dust that absorbs all incident radiation without reemission. 0