Definitions for "secular"
Of or pertaining to this present world, or to things not spiritual or holy; relating to temporal as distinguished from eternal interests; not immediately or primarily respecting the soul, but the body; worldly.
Not regular; not bound by monastic vows or rules; not confined to a monastery, or subject to the rules of a religious community; as, a secular priest.
Belonging to the laity; lay; not clerical.
Confusingly in the context of Secularization, this word can mean both nonreligious and longterm. ST states that Western society is moving towards being secular (nonreligious) as a secular (longterm) trend.
The word has a meaning beyond nonreligious: occurring over a long period.
Long term, not temporary or cyclical.
Pertaining to an age, or the progress of ages, or to a long period of time; accomplished in a long progress of time; as, secular inequality; the secular refrigeration of the globe.
Long-term time frame (10-50 years or more).
Keywords:  slump, socialism
Keywords:  observed, once, century, coming, age
Coming or observed once in an age or a century.