cos·​mo·​chem·​is·​try ˌkäz-mō-ˈke-mə-strē How to pronounce cosmochemistry (audio)
: a branch of chemistry that deals with the chemical composition of and changes in the universe
cosmochemical adjective
cosmochemist noun

Example Sentences

Recent Examples on the Web Some hope that turning to cosmochemistry, the study of the compositions of cosmic objects, might reveal the answer. Quanta Magazine, 3 Nov. 2021 Scientists like Alexander hope that combining new ideas of cosmochemistry with modeling of the early solar system could provide some useful answers. Quanta Magazine, 3 Nov. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cosmochemistry.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


Greek kosmos universe

First Known Use

1940, in the meaning defined above

Time Traveler
The first known use of cosmochemistry was in 1940

Dictionary Entries Near cosmochemistry

Cite this Entry

“Cosmochemistry.” Dictionary, Merriam-Webster, Accessed 25 Mar. 2023.

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