WordReference Random House Unabridged Dictionary of American English © 2026
gem•ol•o•gy
( je mol′ə jē),USA pronunciation n.
gem•o•log•i•cal, gem•mo•log•i•cal
( jem′ə loj′i kəl),USA pronunciation adj.
gem•ol′o•gist, gem•mol′o•gist, n.
- Mineralogy, Jewelrythe science dealing with natural and artificial gemstones.
- 1965–70; gem + -o- + -logy