MICROCHEMISTRY
Etymology
Noun
microchemistry (uncountable)
(chemistry) Chemical techniques for preparing, handling, and analyzing small quantities of chemical compounds, especially masses less than a milligram.
(chemistry) Chemical processes that take place in very small regions, such as on the grain boundaries of a metal.
Source: Wiktionary
Mi`cro-chem"is*try, n. Etym: [Micro- + chemistry.]
Definition: The application of chemical tests to minute objects or portions
of matter, magnified by the use of the microscopy; -- distinguished
from macro-chemistry.
Source: Webster’s Unabridged Dictionary 1913 Edition