remanence n.

early 15c., remainen, "be left after the removal or loss of a part, number, or quality; survive," from Anglo-French remayn-, Old French remain- (as in il remaint "it remains"), stressed stem of remanoir "to stay, dwell, remain; be left; hold out," from Latin remanere "to remain, to stay behind; be left behind; endure, abide, last" (source also of Old Spanish remaner, Italian rimanere), from re- "back" (see re-) + manere "to stay, remain" (from PIE root *men- (3) "to remain").

Also from early 15c. as "continue" in someone's charge or possession; continue in a certain place or condition." From early 15c. in mathematics. Related: Remained; remaining.