histology n 1: the branch of biology that studies the microscopic structure of animal or plant tissues
Histology \His*tol"o*gy\, n. [Gr. "isto`s tissue + -logy.] That branch of biological science, which treats of the minute (microscopic) structure of animal and vegetable tissues; -- called also {histiology}. [1913 Webster]
19 Moby Thesaurus words for "histology": anatomist, anatomy, angiography, angiology, anthropotomy, geomorphology, histologist, morphologist, morphology, myography, myology, organography, organology, osteography, osteology, splanchnography, splanchnology, tectology, zootomy