1) an inclination, slope, declivity
2) the [supposed] sloping of the earth from the equator towards the poles, a zone
3) a tract of land, a region
Part of Speech: noun neuter
From G2827; a slope, that is, (specifically) a "clime" or tract of country: - part, region.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root κλίμα; click on the second column to search for that grammatical form of the root κλίμα; click on the third column to search for that word and grammatical form; click on the total to search for the root κλίμα.