(A) Kelvin: A thermometer scale starting at absolute zero (-273C approximately) and having degrees of the same magnitude as those of the Celsius thermometer.
(A thermometer scale; starting; L:at absolute zero) (-273C; approximately having; degrees of the same magnitude as those of the Celsius thermometer)
A thermometer scale -273C
starting approximately having
L:at absolute zero
degrees of the same magnitude as those of the Celsius thermometer