n. & v.
n. 1 a thing or part added to remedy deficiencies (dietary supplement). 2 a part added to a book etc. to provide further information. 3 a separate section, esp. a colour magazine, added to a newspaper or periodical. 4 Geom. the amount by which an angle is less than 180ø (cf. COMPLEMENT).
v.tr. provide a supplement for. supplemental adj. supplementally adv. supplementation n.
[ ME f. L supplementum (as SUB-, plere fill) ]