- secular ► ADJECTIVE 1) not religious, sacred, or spiritual. 2) (of clergy) not subject to or bound by religious rule. 3) Astronomy 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.► NOUN ▪ a secular priest.DERIVATIVES secularism noun secularist noun secularity noun secularize (also secularise) verb secularly adverb.ORIGIN Latin saecularis 'relating to an age or period' , from saeculum 'generation' , used in Christian Latin to mean 'the world' .
English terms dictionary. 2015.