An Etymological Dictionary of Astronomy and Astrophysics

Having a relatively low temperature.

Etymology (EN): M.E., from O.E. cald, ceald “cold, cool” (cf. O.Fr. and O.Sax. kald, O.H.G. and Ger. kalt, Goth. kalds “cold”), from PIE root *gel-/*gol- “cold;” cf. L. gelare “to freeze,” gelu “frost,” glacies “ice;” Kurd. girsân, girsiân “to coagulate” (Cheung 2007).

Etymology (PE): Sard “cold, cool,” afsordan, afsârdan “to congeal;” Mid.Pers. sard/sart “cold;” Av. sarəta- “cold;” cf. Skt. śiśira- “cold;” L. calidus “warm;” Lith. šaltas “cold;” Welsh clyd “warm;” PIE *keltos- “cool.”