verb (used with object), reduced, reducing.
to bring down to a smaller extent, size, amount, number, etc.:
to reduce one’s weight by 10 pounds.
to lower in degree, intensity, etc.:
to reduce the speed of a car.
to bring down to a lower rank, dignity, etc.: a sergeant reduced to a corporal.
to treat analytically, as a complex idea.
to lower in price.
to bring to a certain state, condition, arrangement, etc.:
to reduce glass to powder.
to bring under control or authority.
Cookery. to evaporate water from (a sauce, soup, or other liquid), usually by boiling.
Photography. to lessen the density of (an exposed negative).
to adjust or correct by making allowances, as an astronomical observation.
Mathematics. to change the denomination or form, but not the value, of (a fraction, polynomial, etc.).
to add electrons to.
to add hydrogen to.
to change (a compound) so that the valence of the positive element is lower.
Chemistry, Metallurgy. to bring into the metallic state by separating from nonmetallic constituents.
to thin or dilute:
to reduce paint with oil or turpentine.
to lower the alcoholic concentration of (spirits) by diluting with water.
Surgery. to restore to the normal place, relation, or condition, as a fractured bone.
Phonetics. to modify the quality of (a speech sound) to one of lesser distinctiveness, especially to pronounce (an unstressed vowel) as (ə) or another centralized vowel, as in the unstressed syllables of medicinal.
verb (used without object), reduced, reducing.
to become reduced.
to become lessened, especially in weight.
to be turned into or made to equal something:
All our difficulties reduce to financial problems.
Cell Biology. to undergo meiosis.
verb (mainly transitive)
(also intransitive) to make or become smaller in size, number, extent, degree, intensity, etc
to bring into a certain state, condition, etc: to reduce a forest to ashes, to reduce someone to despair
(also intransitive) to make or become slimmer; lose or cause to lose excess weight
to impoverish (esp in the phrase in reduced circumstances)
to bring into a state of submission to one’s authority; subjugate: the whole country was reduced after three months
to bring down the price of (a commodity): the shirt was reduced in the sale
to lower the rank or status of; demote: he was reduced from corporal to private, reduced to the ranks
to set out systematically as an aid to understanding; simplify: his theories have been reduced in a popular treatise
(maths) to modify or simplify the form of (an expression or equation), esp by substitution of one term by another
(cookery) to make (a sauce, stock, etc) more concentrated by boiling away some of the water in it
to thin out (paint) by adding oil, turpentine, etc; dilute
(also intransitive) (chem)
to undergo or cause to undergo a chemical reaction with hydrogen or formation of a hydride
to lose or cause to lose oxygen atoms
to undergo or cause to undergo an increase in the number of electrons Compare oxidize
(photog) to lessen the density of (a negative or print) by converting some of the blackened silver in the emulsion to soluble silver compounds by an oxidation process using a photographic reducer
(surgery) to manipulate or reposition (a broken or displaced bone, organ, or part) back to its normal site
(also intransitive) (biology) to undergo or cause to undergo meiosis
reduce re·duce (rĭ-dōōs’, -dyōōs’)
v. re·duced, re·duc·ing, re·duc·es
To bring down, as in extent, amount, or degree; diminish.
To lose weight, as by dieting.
To restore a fractured or displaced body part to a normal condition or position.
To decrease the valence of an atom by adding electrons.
To remove oxygen from a compound.
To add hydrogen to a compound.
noun, Chemistry. 1. a substance that causes another substance to undergo reduction and that is oxidized in the process. reducing agent noun 1. (chem) a substance that reduces another substance in a chemical reaction, being itself oxidized in the process Compare oxidizing agent reducing agent n. A substance that chemically reduces other substances, especially by […]
noun 1. a lens or mirror that produces a virtual image of an object smaller than the object itself. reducing glass noun 1. a lens or curved mirror that produces an image smaller than the object observed
verb (used with object) 1. to reduce.
reductant re·duc·tant (rĭ-dŭk’tənt) n. A reducing agent.