WordReference Random House Unabridged Dictionary of American English © 2026
hy•dro•a
(hī drō′ə),USA pronunciation n. [Pathol.]
- Pathologyany skin condition characterized by red vesicular areas.
- hydr- hydr-1
- Greek hídrōia (plural) heat spots (literally, sweat eggs), equivalent. to hidr(ó̄s) sweat + -ōia, plural of ōión egg; -y- of Neo-Latin
- Neo-Latin