1not connected with religious or spiritual matters:secular buildings secular attitudes to deathContrasted with sacred.
2 Christian Church (of clergy) not subject to or bound by religious rule; not belonging to or living in a monastic or other order. Contrasted with regular.
3 Astronomy of or denoting slow changes in the motion of the sun or planets.
4 Economics (of a fluctuation or trend) occurring or persisting over an indefinitely long period:there is evidence that the slump is not cyclical but secular
5occurring once every century or similarly long period (used especially in reference to celebratory games in ancient Rome).
(also secularisation) noun
- (also secularise) verb