From The Collaborative International Dictionary of English v.0.44 [gcide]:
Compound \Com"pound\, adjective [OE. compouned, p. p. of compounen. See {Compound}, verb (used with an object)] Composed of two or more elements, ingredients, parts; produced by the union of several ingredients, parts, or things; composite; as, a compound word.
Compound substances are made up of two or more simple substances. --I. Watts.
{Compound addition}, {subtraction}, {multiplication}, {division} (Arith.), the addition, subtraction, etc., of compound numbers.
{Compound crystal} (Crystallog.), a twin crystal, or one seeming to be made up of two or more crystals combined according to regular laws of composition.
{Compound engine} (Mech.), a form of steam engine in which the steam that has been used in a high-pressure cylinder is made to do further service in a larger low-pressure cylinder, sometimes in several larger cylinders, successively.
{Compound ether}. (Chem.) See under {Ether}.
{Compound flower} (Bot.), a flower head resembling a single flower, but really composed of several florets inclosed in a common calyxlike involucre, as the sunflower or dandelion.
{Compound fraction}. (Math.) See {Fraction}.
{Compound fracture}. See {Fracture}.
{Compound householder}, a householder who compounds or arranges with his landlord that his rates shall be included in his rents. [Eng.]
{Compound interest}. See {Interest}.
{Compound larceny}. (Law) See {Larceny}.
{Compound leaf} (Bot.), a leaf having two or more separate blades or leaflets on a common leafstalk.
{Compound microscope}. See {Microscope}.
{Compound motion}. See {Motion}.
{Compound number} (Math.), one constructed according to a varying scale of denomination; as, 3 cwt., 1 qr., 5 lb.; -- called also {denominate number}.
{Compound pier} (Arch.), a clustered column.
{Compound quantity} (Alg.), a quantity composed of two or more simple quantities or terms, connected by the sign + (plus) or - (minus). Thus, a + b - c, and bb - b, are compound quantities.
{Compound radical}. (Chem.) See {Radical}.
{Compound ratio} (Math.), the product of two or more ratios; thus ab:cd is a ratio compounded of the simple ratios a:c and b:d.
{Compound rest} (Mech.), the tool carriage of an engine lathe.
{Compound screw} (Mech.), a screw having on the same axis two or more screws with different pitch (a differential screw), or running in different directions (a right and left screw).
{Compound time} (Mus.), that in which two or more simple measures are combined in one; as, 6-8 time is the joining of two measures of 3-8 time.
{Compound word}, a word composed of two or more words; specifically, two or more words joined together by a hyphen.
From The Collaborative International Dictionary of English v.0.44 [gcide]:
Subtraction \Sub*trac"tion\, noun [L. subtractio a drawing back. See {Subtract}, and cf. {Substraction}.]
1. The act or operation of subtracting or taking away a part.
2. (Math.) The taking of a lesser number or quantity from a greater of the same kind or denomination; an operation for finding the difference between two numbers or quantities.
3. (Law) The withdrawing or withholding from a person of some right to which he is entitled by law.
Note: Thus the subtraction of conjugal rights is when either the husband or wife withdraws from the other and lives separate without sufficient reason. The subtraction of a legacy is the withholding or detailing of it from the legatee by the executor. In like manner, the withholding of any service, rent, duty, or custom, is a subtraction, for which the law gives a remedy. --Blackstone.
From WordNet (r) 2.0 [wn]:
noun
1: an arithmetic operation in which the difference between two numbers is calculated; "the subtraction of three from four leaves one"; "four minus three equals one" [syn: {minus}]
2: the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks" [syn: {deduction}] [ant: {addition}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
88 Moby Thesaurus words for "subtraction": abatement, abridgment, absence, abstraction, addition, alienation, alleviation, approximation, attenuation, awayness, blank, contraction, dampening, damping, decrease, decrement, decrescence, deduction, deflation, depreciation, depression, deprivation, detachment, differentiation, diminishment, diminution, disarticulation, disassociation, disconnectedness, disconnection, discontinuity, discount, disengagement, disjointing, disjunction, dislocation, disunion, division, divorce, divorcement, dying, dying off, equation, evolution, extenuation, extrapolation, fade-out, incoherence, integration, interpolation, inversion, involution, isolation, lack, languishment, lessening, letup, lowering, luxation, miniaturization, mitigation, multiplication, neverness, nonexistence, nonoccurrence, nonpresence, notation, nowhereness, parting, partition, practice, proportion, rebate, reduction, relaxation, removal, sagging, scaling down, segmentation, separation, separatism, simplicity, subdivision, transformation, want, weakening, withdrawal, zoning
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