: an itching usually vesicular eruption of the skin
especially
: one induced by exposure to light
Cite this Entry
“Hydroa.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hydroa. Accessed 24 May. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share