caldarium

Noun

In Roman baths, the hottest room, with a plunge-pool. It preceded the tepidarium and frigidarium.
In modern spas, a room with a hot floor.
An intermediate or warm greenhouse.

Origin / Etymology

Unadapted borrowing from Latin caldārium (“room containing warm water for bathing”), substantive of caldārius (“of, pertaining to or suitable for bathing”), from caldus (“warm, hot”) + -ārius, alternative form of calidus, from caleō (“I am warm or hot; glow”).

Scrabble Score: 14

caldarium is a valid Scrabble (US) TWL word
caldarium is not valid in Scrabble (MW) Merriam-Webster Dictionary
caldarium is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 18

caldarium is a valid Words With Friends word