Definition of Planetary nebula

1. Noun. A nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star.

Generic synonyms: Nebula

Definition of Planetary nebula

1. Noun. (astronomy) A nebulosity surrounding a dying star, consisting of material expelled by the star. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Planetary Nebula

planet gear
planet wheel
planetal
planetaria
planetarian
planetaries
planetarily
planetarium
planetariums
planetary
planetary body
planetary gear
planetary gear train
planetary house
planetary nebula (current term)
planetary nebulae
planetary nebulas
planetary object
planetary ring
planetary rings
planetary science
planetary system
planetary systems
planetdom
planeted
planeteer
planeteers
planetesimal
planetesimal hypothesis

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