The Collaborative International Dictionary
Micrology
Micrology \Mi*crol"o*gy\, n. [Micro- + -logy.]
That part of science which treats of microscopic objects, or depends on microscopic observation.
Attention to petty items or differences.
--W. Taylor.
Douglas Harper's Etymology Dictionary
Wiktionary
micrology
n. 1 The study of triviality and minutiae. 2 That part of science which treats of microscopic objects, or depends on microscopic observation.