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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 - Wikipedia
    Subtraction follows several important patterns Subtraction is anti-commutative, meaning that changing the order changes the sign of the answer It is also not associative, meaning that when one subtracts more than two numbers, the order in which subtraction is performed matters
  • subtraction是什么意思_subtraction的翻译_音标_读音_用法_例句_爱词霸在线词典
    英英释义 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" 2 the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks"
  • 减法（四则运算）_百度百科
    减法是 四则运算 之一，从一个数中减去另一个数的 运算 叫做减法；已知两个 加数 的和与其中一个加数，求另一个加数的运算叫做减法。 表示减法的符号是“-”，读作 减号。 减法是一种数学运算，表示从集合中移除对象的操作。 它的符号是负号 (−)。 例如，在右边的图片，有5−2 苹果，5苹果，2个被带走，就剩下了3个苹果。 因此5−2 = 3。 减法表示用不同的对象 (包括负数、分数、无理数、向量、小数、函数和矩阵)去除或减少物理和抽象的量。 减法遵循几个重要的模式。 它是反交换的，意味着改变顺序改变了答案的符号。 它不具有结合性，也就是说，当一个减数超过两个数字时，减法的顺序是重要的。 减法0不改变一个数字。 减法也遵循与加法和乘法等相关运算的可预测规则。
  • Subtraction - Math is Fun
    Subtraction is taking one number away from another This can be written: 5 − 2 = 3 You get good at subtraction with practice
  • SUBTRACTION中文 (简体)翻译：剑桥词典
    If the exact date of birth of each child is known, the precise calculation of the various birth intervals is a simple procedure of subtraction Firstly, subtraction of the maintained discharge treats it as an additive process, but such an origin has not been established
  • Subtraction - Definition, Examples | Subtraction on Number Line
    Subtraction is the process of taking away a number from another It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers
  • Subtraction Worksheets - Math-Drills
    Subtraction worksheets including subtraction facts and subtraction questions with larger numbers
  • Basic subtraction (video) | Khan Academy
    Hopefully that gives you a little bit of intuition about what subtraction is In the next video I'll just do as many basic subtraction problems I can do in 10 minutes
  • Subtraction -- from Wolfram MathWorld
    Subtraction is the operation of taking the difference d=x-y of two numbers x and y Here, x is called the minuend, y is called the subtrahend, and the symbol between the x and y is called the minus sign
  • 7 Ways to Subtract - wikiHow
    Subtraction is simply taking one number away from the other It's pretty straightforward when you're subtracting one whole number from another, but subtraction can get a bit more complicated when you're working with fractions or decimals





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