STEREOCHEMISTRY
Etymology
Noun
stereochemistry (countable and uncountable, plural stereochemistries)
(chemistry, uncountable) the branch of chemistry that involves the spatial arrangement of the atoms of molecules, and studies how this affects the physical and chemical properties of such species
(chemistry, countable) the effect of such spatial arrangement on the chemistry of a particular compound
Source: Wiktionary
Ste`re*o-chem"is*try, n. Etym: [Stereo- + chemistry.] (Chem.)
Definition: Chemistry considered with reference to the space relations of
atoms.
Source: Webster’s Unabridged Dictionary 1913 Edition