as·​tro·​phys·​ics | \ˌas-trə-ˈfi-ziks \

Definition of astrophysics 

: a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena

Other Words from astrophysics

astrophysical \-​zi-​kəl \ adjective
astrophysically \-​zi-​k(ə-​)lē \ adverb
astrophysicist \-​ˈfi-​zə-​sist, -​ˈfiz-​sist \ noun

First Known Use of astrophysics

1870, in the meaning defined above

History and Etymology for astrophysics

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The first known use of astrophysics was in 1870

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More Definitions for astrophysics

astrophysics

noun

English Language Learners Definition of astrophysics

: the scientific study of the physical and chemical properties and structures of stars, planets, and other objects in outer space

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