n.
Pronunciation: ˌ j ē - ō - ' ke-m ə -str ē
Function: noun
Date: 1902
1 : a science that deals with the chemical composition of and chemical changes in the solid matter of the earth or a celestial body (as the moon)
2 : the related chemical and geological properties of a substance
– geo · chem · i · cal \ - ' ke-mi-k ə l \ adjective
– geo · chem · i · cal · ly \ -k( ə -)l ē \ adverb
– geo · chem · ist \ - ' ke-mist \ noun