[syn: reduction, simplification]
The Collaborative International Dictionary of English v.0.48:
Reduction \Re*duc"tion\ (r[-e]*d[u^]k"sh[u^]n), n. [F.
r['e]duction, L. reductio. See Reduce.]
1. The act of reducing, or state of being reduced; conversion
to a given state or condition; diminution; conquest; as,
the reduction of a body to powder; the reduction of things
to order; the reduction of the expenses of government; the
reduction of a rebellious province.
2. (Arith. & Alg.) The act or process of reducing. See
Reduce, v. t., 6. and To reduce an equation, To
reduce an expression, under Reduce, v. t.
(a) The correction of observations for known errors of
(b) The preparation of the facts and measurements of
observations in order to deduce a general result.
4. The process of making a copy of something, as a figure,
design, or draught, on a smaller scale, preserving the
proper proportions. --Fairholt.
5. (Logic) The bringing of a syllogism in one of the
so-called imperfect modes into a mode in the first figure.
6. (Chem. & Metal.) The act, process, or result of
reducing; as, the reduction of iron from its ores; the
reduction of an aldehyde into an alcohol.
7. (Med.) The operation of restoring a dislocated or
fractured part to its former place.
Reduction ascending (Arith.), the operation of changing
numbers of a lower into others of a higher denomination,
as cents to dollars.
Reduction descending (Arith.), the operation of changing
numbers of a higher into others of a lower denomination,
as dollars to cents.
Syn: Diminution; decrease; abatement; curtailment;
subjugation; conquest; subjection.
WordNet (r) 3.0 (2006):
n 1: the act of decreasing or reducing something [syn:
decrease, diminution, reduction, step-down] [ant:
2: any process in which electrons are added to an atom or ion
(as by removing oxygen or adding hydrogen); always occurs
accompanied by oxidation of the reducing agent [syn:
3: the act of reducing complexity [syn: reduction,
Moby Thesaurus II by Grady Ward, 1.0:
290 Moby Thesaurus words for "reduction":
abasement, abatement, abbreviation, about-face, abridgment,
abstract, acetification, acidification, acidulation, addition,
agio, alchemy, alkalization, allayment, alleviation, allowance,
analgesia, anesthesia, anesthetizing, apocope, appeasement,
approximation, assimilation, assuagement, assumption, astriction,
astringency, attenuation, attrition, bank discount, becoming,
blunting, bottleneck, break, breakage, breaking, bump, bust,
calming, carbonation, cash discount, casting down, catalysis,
cervix, chain discount, change, change-over, charge-off,
cheapening, chemicalization, circumscription, coarctation,
compactedness, compaction, compression, compressure, concavity,
concentration, concession, condensation, conquering, consolidation,
conspectus, constriction, constringency, contraction, contracture,
conversion, crushing, curtailment, cut, cutting, dampening,
damping, de-escalation, deadening, debasement, debilitation,
decline, decrease, decrement, decrescence, deduction, deflation,
degradation, degrading, demotion, demulsion, depletion, depluming,
depreciation, depression, derogation, descent, detraction,
detrusion, devaluation, devitalization, differentiation, dilution,
diminishment, diminuendo, diminution, dip, discount, disgrading,
disparagement, displuming, dive, division, domestication,
downgrading, drawback, ducking, dulcification, dulling, dying,
dying off, ease, easement, easing, effemination, electrolysis,
elision, ellipsis, enervation, enfeeblement, epitome, equation,
evisceration, evolution, exhaustion, extenuation, extraction,
extrapolation, fade-out, falling-off, fatigue, ferment,
fermentation, flip-flop, foreshortening, growth, hauling down,
hollowness, hourglass, hourglass figure, humbling, humiliation,
hushing, hydrogenation, impairment, inanition, integration,
interpolation, inversion, involution, isomerism, isthmus, kickback,
knitting, languishment, lapse, leniency, lessening, letdown, letup,
lightening, loosening, lowering, lulling, markdown, metamerism,
metamerization, miniaturization, mitigation, modulation,
mollification, multiplication, narrow place, narrowing,
naturalization, neck, nitration, nose dive, notation, numbing,
oxidation, oxidization, pacification, palliation, passage, penalty,
penalty clause, percentage, phosphatization, plummet, plummeting,
plunge, polymerism, polymerization, position isomerism, practice,
precis, premium, price cut, price fall, price reduction, price-cut,
progress, proportion, puckering, pursing, quelling, quietening,
quieting, re-formation, rebate, rebatement, recap, recapitulation,
reconversion, refund, relaxation, relief, remedy, remission,
resolution, retraction, retrenchment, reversal, rollback, sag,
sagging, salvage, salving, saturization, scaling down, setoff,
shift, shortening, shrinkage, simplicity, sinking, slackening,
slash, slump, softening, solidification, soothing, stranglement,
strangulation, striction, stricture, stripping of rank, subdual,
subduement, submergence, subtraction, summary, summation,
suppression, switch, switch-over, syncope, synopsis, systole,
taming, tare, telescoping, tempering, thinning, thrusting under,
time discount, trade discount, tranquilization, transformation,
transit, transition, treading down, tret, truncation, turning into,
underselling, volte-face, wasp waist, weakening, working,
The Free On-line Dictionary of Computing (30 December 2018):
(Or "contraction") The process of transforming an expression
according to certain reduction rules. The most important
forms are beta reduction (application of a lambda
abstraction to one or more argument expressions) and delta
reduction (application of a mathematical function to the
required number of arguments).
An evaluation strategy (or reduction strategy), determines
which part of an expression (which redex) to reduce first.
There are many such strategies.
See graph reduction, string reduction, normal order
reduction, applicative order reduction, parallel
reduction, alpha conversion, beta conversion, delta
conversion, eta conversion.