An Etymological Dictionary of Astronomy and Astrophysics

A usually small part of something that is left after the rest of it has been used, removed, or destroyed. → supernova remnant.

Etymology (EN): M.E., from O.Fr. remnant, pr.p. of remenoir “to remain,” from L.
remanere “to remain, stay behind,” from → re- “back” + manere “to stay, remain,” cognate with Pers. mândan “to stay, remain,” as below.

Etymology (PE): Bâzmândé “remnant,” from bâz-, → re-,

• mândé p.p. of mândan “to remain, stay” (mân “house, home;” Mid.Pers. mândan “to remain, stay;” O.Pers. mān- “to remain, dwell;” Av. man- “to remain, dwell; to wait;” Gk. menein “to remain;” L. manere “to stay, abide” (Fr. maison, ménage; E. manor, mansion, permanent); PIE base *men- “to remain, wait for”).