Protoplanetary

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Of or pertaining to a protoplanet. not-comparable
  2. 2
    Relating to a stage in the life of a red giant star or its protoplanetary nebula during the star's final stages of life not-comparable

Synonyms

All synonyms
protoplanetesimal

Example

More examples

"Astronomers have detected swirls of diamonds, hundreds of thousands of times smaller than a grain of sand, in the protoplanetary or circumstellar disks of three baby star systems in the Milky Way - V892 Tau, HD 97048, and MWC 297."

Etymology

Etymology 1

From proto- + planetary and protoplanet + -ary.

Etymology 2

From protoplanetary nebula, from proto- + planetary nebula.

Related phrases

protoplanetary coreprotoplanetary discprotoplanetary diskprotoplanetary embryoprotoplanetary nebulaprotoplanetary object

More for "protoplanetary"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.