angle of inclination is a noun meaning "(geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis)". It carries one recorded sense.
(geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis)
geometry
Definitions, synonyms and semantic relations for angle of inclination come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.