Pronounced: UH-LIZH-uhn, noun
Notes: I did not know that this was a word!
The word hyperhidrosis means “a condition of excessive sweating”
This word came into English in the mid-1800s
Background / Comments
You probably recognized (as I did) the prefix hyper- (above; beyond). I didn’t know the rest of it, but is comes from the Greek word hydrōsis (sweating). Incidentally, hydrosis is also an English word meaning “an excessive production of sweat”.