It may be a feminine of isotherm ("of equal temperature"), but it is used so to name in meteorology the graph that joins with a line points of the planet with the same temperature at the same time of year. It consists of the Greek voices 953; 963; 959; 962; ( isos "equal" ) 952; 949; 961; 956; 959; 962; ( thermós "heat, temperature") .
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