WordReference Random House Unabridged Dictionary of American English © 2025
or•is•mol•o•gy
(ôr′iz mol′ə jē, or′-),USA pronunciation n.
- Literaturethe science of defining the technical or special terms of a particular subject or field of study.
- Greek horism(ós) definition, lit, marking of boundaries (derivative of horízein to delimit, make a boundary; see horizon) + -o- + -logy, with erroneous omission of initial h-
- 1810–20