addendum

• POS: Noun
• HYPHEN: ad=den=dum

CIDE DICTIONARY

addendum, n. [L., fr. addere to add.].

 A thing to be added; an appendix or addition.  [1913 Webster]

Addendum circle (Mech.), the circle which may be described around a circular spur wheel or gear wheel, touching the crests or tips of the teeth. Rankine.

OXFORD DICTIONARY

addendum, n. (pl. addenda)
1 a thing (usu. something omitted) to be added, esp. (in pl.) as additional matter at the end of a book.
2 an appendix; an addition.

Etymology

L, gerundive of addere ADD

THESAURUS

addendum

PS, Parthian shot, accession, accessory, accident, accidental, accompaniment, addenda, additament, addition, additive, additory, additum, adjunct, adjuvant, afterthought, annex, annexation, appanage, appendage, appendant, appendix, appurtenance, appurtenant, attachment, augment, augmentation, auxiliary, back matter, chorus, coda, codicil, collateral, colophon, complement, conclusion, concomitant, consequence, contingency, contingent, continuance, continuation, corollary, double take, dying words, envoi, epilogue, extension, extra, extrapolation, fixture, follow-through, follow-up, happenstance, incidental, increase, increment, inessential, last words, mere chance, nonessential, not-self, offshoot, other, parting shot, pendant, peroration, postface, postfix, postlude, postscript, refrain, reinforcement, rider, second thought, secondary, sequel, sequela, sequelae, sequelant, sequent, sequitur, side effect, side issue, subscript, subsidiary, suffix, superaddition, supplement, swan song, tag, tailpiece, undergirding, unessential

ROGET THESAURUS

addendum

Adjunct

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.