■ noun
1》 a thing added to something else to enhance or complete it.
2》 a separate section, especially a colour magazine, added to a newspaper or periodical.
3》 an additional charge payable for an extra service or facility.
4》 Geometry the amount by which a given angle is less than 180°.
■ verb provide a ~ for.
Derivatives
~al adjective
~ally adverb
~ation noun
Origin
ME: from L. ~um , from supplere (see supply 1 ).