1.  modification(n = noun.act) adjustment, alteration - the act of making something different (as e.g. the size of a garment);
is a kind of change
has particulars: laxation, loosening, tightening, accommodation, adaptation, tune
Derived forms verb modify₃, verb modify₁

2.  modification(n = noun.artifact) - slightly modified copy; not an exact copy; "a modification of last year's model"
is a kind of copy
Derived form verb modify₁

3.  modification(n = noun.linkdef) limiting, qualifying - the grammatical relation that exists when a word qualifies the meaning of the phrase;
is a kind of grammatical relation
has particulars: restrictiveness, apposition
Derived form verb modify₂

4.  modification(n = noun.event) alteration, change - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"
is a kind of happening, natural event, occurrence, occurrent
has particulars: acceleration, deceleration, retardation, slowing, avulsion, break, mutation, sublimation, surprise, birth, nascence, nascency, nativity, breakup, detachment, separation, vagary, fluctuation, variation, conversion, death, decease, expiry, decrease, drop-off, lessening, destabilization, increase, easing, moderation, relief, deformation, transition, shift, transformation, transmutation, scintillation, sparkling, twinkle, play, shimmer, transmutation, damage, harm, impairment, development, revolution, chromosomal mutation, genetic mutation, mutation, sex change, loss of consciousness
Derived form verb modify₁

1.  The act of modifying, or the state of being modified; a change; as, the modification of an opinion, or of a machine. Bentley. [1913 Webster]

2.  Something which has been modified; a modified form or condition; state as modified; as, the various modifications of light; the latest modification of the operating system crashes less frequently. [1913 Webster]

3.  The alteration of the meaning of a word or phrase by another word or phrase; -- usually a restriction of the scope of the word modified; as, in the phrase “a billion dollars is a relatively small sum to spend on cancer research” the modification of small by relatively is needed to make the sentence accurate, rather than ludicrous. [PJC]

modification, n.
1 the act or an instance of modifying or being modified.
2 a change made.

Etymology:
F or f. L modificatio (as MODIFY)

N  difference, variance, variation, variety, diversity, dissimilarity, disagreement, disparity, distinction, contradistinction, alteration, modification, permutation, moods and tenses, nice distinction, fine distinction, delicate distinction, subtle distinction, shade of difference, nuance, discrimination, differentia, different thing, something else, apple off another tree, another pair of shoes, horse of a different color, this that or the other, differing, different, diverse, heterogeneous, multifarious, polyglot, distinguishable, dissimilar, varied, modified, diversified, various, divers, all manner of, all kinds of, variform, daedal, other, another, not the same, unequal, unmatched, widely apart, poles apart, distinctive, characteristic, discriminative, distinguishing, incommensurable, incommensurate, differently, il y a fagots et fagots.

N  variation, alteration, modification, moods and tenses, discrepance, discrepancy, divergency, deviation, aberration, innovation, varied, modified, diversified.

N  copy, facsimile, counterpart, effigies, effigy, form, likeness, image, picture, photo, xerox, similitude, semblance, ectype, photo offset, electrotype, imitation, model, representation, adumbration, study, portrait, resemblance, duplicate, reproduction, cast, tracing, reflex, reflexion, reflection, shadow, echo, transcript, transcription, recording, scan, chip off the old block, reprint, new printing, rechauffe, apograph, fair copy, parody, caricature, burlesque, travesty, travestie, paraphrase, derivative, derivation, modification, expansion, extension, revision, second edition, servile copy, servile imitation, plagiarism, counterfeit, fake, pasticcio, faithful, lifelike, close, conscientious, unoriginal, imitative, derivative.

N  change, alteration, mutation, permutation, variation, modification, modulation, inflexion, mood, qualification, innovation, metastasis, deviation, turn, evolution, revolution, diversion, break, transformation, transfiguration, metamorphosis, transmutation, deoxidization, transubstantiation, mutagenesis transanimation, transmigration, metempsychosis, avatar, alterative, conversion, revolution &c (sudden or radical change), inversion, displacement, transference, changeableness, tergiversation, changed, newfangled, changeable, transitional, modifiable, alterative, mutatis mutandis, Int, quantum mutatus!, a change came o'er the spirit of my dream, nous avons change tout cela, tempora mutantur nos et mutamur in illis, non sum qualis eram, casaque tourner, corpora lente augescent cito extinguuntur, in statu quo ante bellum, still ending and beginning still, vox audita perit littera scripta manet.

N  qualification, limitation, modification, coloring, allowance, grains of allowance, consideration, extenuating circumstances, mitigation, condition, proviso, prerequisite, contingency, stipulation, provision, specification, sine qua non, catch, string, strings attached, exemption, exception, escape clause, salvo, saving clause, discount, restriction, fine print, qualifying, qualified, conditioned, restricted, hedged, conditional, exceptional, hypothetical, contingent, provided, provided that, provided always, if, unless, but, yet, according as, conditionally, admitting, supposing, on the supposition of, with the understanding, even, although, though, for all that, after all, at all events, approximately, in a limited degree (smallness), somewhat, sort of, something like that, to a certain extent, to a degree, in a sense, so to speak, with grains of allowance, cum grano salis, with a grain of salt, exceptis excipiendis, wind and weather permitting, if possible, subject to, conditioned upon, with this proviso, if the good lord is willing and the creeks don't r, catch-, Degrees of Evidence.

behavior modification