Celsius

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Cel·si·us

(sel'sē-ŭs),
Anders, Swedish astronomer, 1701-1744. See: Celsius scale.

Celsius (°C)

[sel′sē·əs]
Etymology: Anders Celsius, Swedish scientist, 1701-1744
temperature scale in which 0° is the freezing point of water and 100° is the boiling point of water at sea level. To convert to Fahrenheit, multiply the Celsius by 1.8, then add 32. Also called centigrade. Compare Fahrenheit.

Cel·si·us scale

(sel'sē-ŭs skāl)
A temperature scale that is based on the triple point of water (defined to be 273.16°K) and assigned the value of 0.01°C; has replaced the centigrade scale because the triple point of water can be more accurately measured than the ice point; for most practical purposes, however, the two scales are equivalent.
[Anders Celsius]