From Latin calvitium (“baldness”), from calvus (“bald”).
calvity (countable and uncountable, plural calvities)
- (uncountable) Baldness.
- An area of skin that has become bald.
1972, Patrick O'Brian, Post Captain:
- He wore his own hair – what there was left of it: short tight curls round a shining calvity, though he was in his thirties, no more – and he looked like one of the fatter, more jovial Roman emperors […].
- (baldness): The synonymous form calvities is more common. Though one appears to be the other's plural, in fact both forms are usually uncountable.