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astrophysics

noun pl but singular or pl in constr \ˌas-trə-ˈfi-ziks\

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

— as·tro·phys·i·cal \-zi-kəl\ adjective

— as·tro·phys·i·cal·ly \-zi-k(ə-)lē\ adverb

— as·tro·phys·i·cist \-ˈfi-zə-sist, -ˈfiz-sist\ noun

International Scientific Vocabulary

First Known Use: 1890

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