I. Cel·si·us ˈsel-sē-əs, -shəs adjective
Etymology: Anders Celsius
Date: circa 1850
: relating to, conforming to, or having the international thermometric scale on which the interval between the triple point of water and the boiling point of water is divided into 99.99 degrees with 0.01° representing the triple point and 100° the boiling point
10° Celsius
also : centigrade — abbreviation C
II. Cel·sius ˈsel-sē-əs, -shəs biographical name
Anders 1701-1744 Swedish astronomer