King James Bible Dictionary

Mild, a Christian of Philippi, Paul's "fellow-labourer," whose name he mentions as "in the book of life" (Philippians 4:3). It was an opinion of ancient writers that he was the Clement of Rome whose name is well known in church history, and that he was the author of an Epistle to the Corinthians, the only known manuscript of which is appended to the Alexandrian Codex, now in the British Museum. It is of some historical interest, and has given rise to much discussion among critics. It makes distinct reference to Paul's First Epistle to the Corinthians.

mild; good; merciful

A disciple at Philippi.
Philippians 4:3

(mild, merciful), (Philemon 4:3) a fellow laborer of St. Paul when he was at Philippi. (A.D. 57.) It was generally believed in the ancient Church that this Clement was identical with the bishop of Rome who afterwards became so celebrated.

CLEMENT, adjective Mild in temper and disposition; gentle; lenient; merciful; kind; tender; compassionate.

CLEMENTINE, adjective Pertaining to St. Clement, or to his compilations; or to the constitutions of Clement the fifth.

CLEMENTLY, adverb With mildness of temper; mercifully.