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Definition of luminary
luminary
/ˈluːmɪnɛri/
lu · mi · nar · y
Plural:luminaries
luminary Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
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• noun
1
A person who inspires or influences others, especially one who is highly prominent and respected in a particular sphere or profession.
Example
"The symposium on artificial intelligence was attended by several luminaries in the field of computer science."
2
A natural light-giving celestial body, particularly the sun or the moon.
Example
"Ancient astronomers meticulously tracked the movements of the great luminaries across the night sky to map the seasons."
Synonyms
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View all antonyms for luminaryWord Origin & Etymology
From Middle English 'luminarie', from Old French 'luminarie', derived from Late Latin 'luminarium' (lamp, light), which in turn comes from Latin 'lumen' (light).
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Luminary. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/luminary