Obliquity n. : The condition of being oblique; deviation from a right line; deviation from parallelism or perpendicularity; the amount of such deviation; divergence; as, the obliquity of the ecliptic to the equator.

Obliquity n. : Deviation from ordinary rules; irregularity; deviation from moral rectitude.

Example:
What is the difference between eccentricity, Obliquity, and precession?

Taxonomy
axial tilt, obliquity of the ecliptic, Earth's, variations, orbit, the seasons, formula, rotation, planets, free encyclopedia, axis, Sun, Earth, tilt, above the horizon, epoch, models, perpendicularity.

Defination from the web:
obliquity of the ecliptic. ... Lower obliquity causes polar regions to receive less seasonally contrasting solar radiation, producing conditions more ...