(n.) A line connecting or marking points on the earth's surface having the same temperature. This may be the temperature for a given time of observation, or the mean temperature for a year or other period. Also, a similar line based on the distribution of temperature in the ocean.
Thesaurus Entries
air mass, anticyclone, cold front, cold sector, cyclone, front, high, high-pressure area, isobar, isometric, isometric line, isopiestic line, isothermal line, low, low-pressure area, occluded front, polar front, squall line, stationary front, warm front, weather map, wind-shift line
