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Synonyms

astronomer

American  
[uh-stron-uh-mer] / əˈstrɒn ə mər /

noun

  1. an expert in astronomy; a scientific observer of the celestial bodies.

Etymology

Origin of astronomer

First recorded in 1325–75; Middle English; astronomy, -er 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Several scenarios had been proposed to explain this emission," explains Yaël Nazé, an astronomer at ULiège.

From Science Daily • Mar. 25, 2026

"Enthusiastic astronomer" Nazish was out moon spotting with her three nieces and nephews and said she wanted to pass on the skill.

From BBC • Mar. 20, 2026

The calculation was created in the 1800s by a Belgian astronomer, and then a doctor in the U.S. renamed it the body mass index in the 1970s.

From MarketWatch • Mar. 18, 2026

The author documents Tennyson’s reaction to books by the geologist Charles Lyell, the computer pioneer Charles Babbage and the astronomer John Herschel.

From The Wall Street Journal • Feb. 20, 2026

It represents an intellectual breakthrough: Digges was the first competent astronomer explicitly to propose an infinite universe.

From "The Invention of Science" by David Wootton

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.