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subtraction    音标拼音: [səbtr'ækʃən]
n. 减去,减法

减去,减法

subtraction
减法

subtraction
减法

subtraction
n 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" [synonym:
{subtraction}, {minus}]
2: the act of subtracting (removing a part from the whole); "he
complained about the subtraction of money from their
paychecks" [synonym: {subtraction}, {deduction}] [ant:
{addition}]

Compound \Com"pound\, a. [OE. compouned, p. p. of compounen. See
{Compound}, v. t.]
Composed of two or more elements, ingredients, parts;
produced by the union of several ingredients, parts, or
things; composite; as, a compound word.
[1913 Webster]

Compound substances are made up of two or more simple
substances. --I. Watts.
[1913 Webster]

{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.
[1913 Webster]


Subtraction \Sub*trac"tion\, n. [L. subtractio a drawing back.
See {Subtract}, and cf. {Substraction}.]
1. The act or operation of subtracting or taking away a part.
[1913 Webster]

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.
[1913 Webster]

3. (Law) The withdrawing or withholding from a person of some
right to which he is entitled by law.
[1913 Webster]

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.
[1913 Webster]

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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subtraction查看 subtraction 在百度字典中的解释百度英翻中〔查看〕
subtraction查看 subtraction 在Google字典中的解释Google英翻中〔查看〕
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