Ĕst'ū-ance, n.

noun

n. [Lat. æstuans, p. pr. of æstuare, to be in a violent or waving motion, to boil up, to burn, æstus, boiling or undulating motion, fire, glow, heat, storm, fury.] Heat. [Obs.] “Regulated estuance from wine.” Browne.