Not spiritual; not ecclesiastical; relating to affairs of the present world. Secular business. As used in Sunday laws; this term includes all forme of activity in the business affairs of life, the prosecution of a trade or employment and commercial dealings; such as the making of promissory notes,lending money, and the like. Secular clergy. In ecclesiastical law, this term la applied to the parochial clergy, who perform their ministry in seculo (in the world), and who are thus distimniished from the monastic or “regular” clergy. Steph. Comm. 681, note.