— explemental /ek'spleuh men"tl/ , explementary /ek'spleuh men"teuh ree, -tree/ , adj.
/ek"spleuh meuhnt/ , n. Math.
the quantity by which an angle or an arc falls short of 360° or a circle.
[ 1585-95; explementum that which fills up, equiv. to exple ( re ) to fill ( ex- EX- 1 + plere to fill) + -mentum -MENT ]