D defs.my
Entry 1 sense Webster, 1913

Histology

/hĭs-täl'-əj-ē/ · His·tol·o·gy · IPA /hɪsˈtɒləd͡ʒi/
01 n. That branch of biological science, which treats of the minute (microscopic) structure of animal and vegetable tissues; -- called also histiology.
  1. 1.
    That branch of biological science, which treats of the minute (microscopic) structure of animal and vegetable tissues; -- called also histiology. Also: histiology