Celsius /ˈsɛlsijəs/ adjective Learner's definition of CELSIUS
: relating to or having a scale for measuring temperature on which the boiling point of water is at 100 degrees and the freezing point of water is at 0 degrees攝氏的(攝氏溫標下,水的沸點爲100度,冰點爲0度) —
abbreviation C — compare fahrenheit