Secular meaning : A secular ecclesiastic, or one not bound by monastic rules. A church official whose functions are confined to the vocal department of the choir. A layman, as distinguished from a clergyman. Not specifically religious; lay or civil, as opposed to clerical. Temporal; worldly, or otherwise not based on something timeless. Not bound by the vows of a monastic order. Happening once in an age or century. Continuing over a long period of time, long-term. Centuries-old, ancient. Relating to long-term non-periodic irregularities, especially in planetary motion or magnetic field. (atomic physics) Unperturbed over time.