Astronomer definition

ə-strŏnə-mər
Frequency:
An expert in astronomy.
noun
8
2
One who specializes in astronomy.
noun
5
4
The definition of an astronomer is a scientist who studies matter and objects in outer space.

Someone who observes the stars and makes notes about their movements is an example of an astronomer.

noun
2
1
One who studies astronomy, the stars or the physical universe; a scientist whose area of research is astronomy or astrophysics.
noun
2
1
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Other Word Forms

Noun

Singular:
astronomer
Plural:
astronomers

Origin of astronomer