1.  supplement(n = noun.communication) addendum, postscript - textual matter that is added onto a publication; usually at the end;
is a kind of matter
is a part of back matter, end matter
has particulars: appendix, continuation, sequel
Derived forms verb supplement₃, adjective supplementary₂

2.  supplement(n = noun.attribute) supplementation - a quantity added (e.g. to make up for a deficiency);
is a kind of increase, increment
Derived forms verb supplement₁, verb supplement₂, adjective supplemental₂, adjective supplementary₂

3.  supplement(n = noun.artifact) accessory, add-on, appurtenance - a supplementary component that improves capability;
is a kind of component, constituent, element
has particulars: auto accessory, computer accessory, fitting, fixings, trimmings
Derived forms verb supplement₁, adjective supplemental₁, adjective supplementary₁

1.  supplement(v = verb.possession) - add as a supplement to what seems insufficient; "supplement your diet"
is one way to add
Derived forms noun supplement₃, noun supplement₂, noun supplementation₁
Sample sentences: Somebody ----s something; Somebody ----s something with something

2.  supplement(v = verb.stative) - serve as a supplement to; "Vitamins supplemented his meager diet"
is one way to be, comprise, constitute, make up, represent
Derived form noun supplement₂
Sample sentences: Something ----s

3.  supplement(v = verb.contact) add on, affix, append - add to the very end; "He appended a glossary to his novel where he used an invented language"
is one way to attach
Derived forms noun supplement₁, noun supplementation₂
Sample sentences: Somebody ----s something; Somebody ----s something to somebody

1.  That which supplies a deficiency, or meets a want; a store; a supply. Chapman. [1913 Webster]

2.  That which fills up, completes, or makes an addition to, something already organized, arranged, or set apart; specifically, a part added to, or issued as a continuation of, a book or paper, to make good its deficiencies or correct its errors. [1913 Webster]

3.  The number of degrees which, if added to a specified arc, make it 180°; the quantity by which an arc or an angle falls short of 180 degrees, or an arc falls short of a semicircle. [1913 Webster]

   To fill up or supply by addition; to add something to. [1913 Webster]
"Causes of one kind must be supplemented by bringing to bear upon them a causation of another kind." [1913 Webster]

supplement, 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 180° (cf. COMPLEMENT).
--v.tr. provide a supplement for.

Derivative:
supplemental adj. supplementally adv. supplementation n.

Etymology:
ME f. L supplementum (as SUB-, plere fill)

N  addition, annexation, adjection, junction, superposition, superaddition, superjunction, superfetation, accession, reinforcement, increase, increment, supplement, accompaniment, interposition, insertion, added, additional, supplemental, supplementary, suppletory, subjunctive, adjectitious, adscititious, ascititious, additive, extra, accessory, au reste, in addition, more, plus, extra, and, also, likewise, too, furthermore, further, item, and also, and eke, else, besides, to boot, et cetera, and so on, and so forth, into the bargain, cum multis aliis, over and above, moreover, with, withal, including, inclusive, as well as, not to mention, let alone, together with, along with, coupled with, in conjunction with, conjointly, jointly, adde parvum parvo magnus acervus erit.

N  adjunct, addition, additament, additum, affix, appelidage, annexe, annex, augment, augmentation, increment, reinforcement, supernumerary, accessory, item, garnish, sauce, accompaniment, adjective, addendum, complement, supplement, continuation, rider, offshoot, episode, side issue, corollary, piece, flap, lappet, skirt, embroidery, trappings, cortege, tail, suffix, wing, additional, alate, alated, winged, in addition.

N  completeness, completion, integration, allness, entirety, perfection, solidity, solidarity, unity, all, ne plus ultra, ideal, limit, complement, supplement, make-weight, filling, up, impletion, saturation, saturity, high water, high tide, flood tide, spring tide, fill, load, bumper, bellyful, brimmer, sufficiency, complete, entire, whole, perfect, full, good, absolute, thorough, plenary, solid, undivided, with all its parts, all- sided, exhaustive, radical, sweeping, thorough-going, dead, regular, consummate, unmitigated, sheer, unqualified, unconditional, free, abundant, brimming, brimful, topful, topfull, chock full, choke full, as full as an egg is of meat, as full as a vetch, saturated, crammed, replete, fraught, laden, full-laden, full-fraught, full-charged, heavy laden, completing, supplemental, supplementary, ascititious, completely, altogether, outright, wholly, totally, in toto, quite, all out, over head and ears, effectually, for good and all, nicely, fully, through thick and thin, head and shoulders, neck and heel, neck and crop, in all respects, in every respect, at all points, out and out, to all intents and purposes, toto coelo, utterly, clean, clean as a whistle, to the full, to the utmost, to the backbone, hollow, stark, heart and soul, root and branch, down to the ground, to the top of one's bent, as far as possible, a outrance, throughout, from first to last, from beginning to end, from end to end, from one end to the other, from Dan to Beersheba, from head to foot, from top to toe, from top to bottom, de fond en comble, a fond, a capite ad calcem, ab ovo usque ad mala, fore and aft, every, whit, every inch, cap-a-pie, to the end of the chapter, up to the brim, up to the ears, up to the eyes, as a as can be, on all accounts, sous tous les rapports, with a vengeance, with a witness, falsus in uno falsus in omnibus, false in one thing, false in everything, omnem movere lapidem, una scopa nuova spazza bene.

colour supplement, single supplement