protoplanetary
See also: proto-planetary
English
Alternative forms
Etymology 1
From proto- + planetary and protoplanet + -ary.
Adjective
protoplanetary (not comparable)
- (astronomy, planets) Of or pertaining to a protoplanet.
Coordinate terms
Derived terms
- proplyd
- protoplanetary core
- protoplanetary disc
- protoplanetary disk
- protoplanetary embryo
- protoplanetary nebula
- protoplanetary object
Related terms
- inter-planetary
- interplanetary
- planet
- planetary
- post-planetary
- postplanetary
- pre-planetary
- preplanetary
- protoplanet
Translations
of or pertaining to a protoplanet
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Etymology 2
From protoplanetary nebula, from proto- + planetary nebula.
Adjective
protoplanetary (not comparable)
- Relating to a stage in the life of a red giant star or its protoplanetary nebula during the star's final stages of life