C0670200 (kŏz′mō-kĕm′ĭ-strē)n. The scientific study of the chemical composition of the universe, especially the early universe.cos′mo·chem′i·cal(-ĭ-kəl) adj.cos′mo·chem′ist n.
cosmochemist
(ˌkɒzməˈkɛmɪst) na student of cosmochemistryEncyclopediaSeeCosmochemistry