deduction

If you get a tax deduction it means you get to reduce the amount of your income that is subject to tax. If something's on sale, you might get a percentage deduction from the original price. Deduction means taking away, or an amount taken away.

If you're a fan of Sherlock Holmes, you already know that the process of logical deduction helps to solve crimes––you take away the information you do know to deduce the answer to what you don't. In figure skating, every mistake on the ice results in a point deduction––the judges take points away.

PRIMARY MEANINGS OF: deduction

1
n
the act of subtracting (removing a part from the whole)
2
n
reasoning from the general to the particular (or from cause to effect)
FULL DEFINITIONS OF: deduction
1

n the act of subtracting (removing a part from the whole)

Synonyms:
subtraction
Antonyms:
addition
the act of adding one thing to another
Types:
bite
a portion removed from the whole
withholding
the act of deducting from an employee's salary
Type of:
decrease, diminution, reduction, step-down
the act of decreasing or reducing something

n an amount or percentage deducted

Synonyms:
discount
Types:
trade discount
a discount from the list price of a commodity allowed by a manufacturer or wholesaler to a merchant
Type of:
adjustment, allowance
an amount added or deducted on the basis of qualifying circumstances

n the act of reducing the selling price of merchandise

Synonyms:
discount, price reduction
Type of:
decrease, diminution, reduction, step-down
the act of decreasing or reducing something

n a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket

Synonyms:
tax deduction, tax write-off
Types:
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tax benefit, tax break
a tax deduction that is granted in order to encourage a particular type of commercial activity
business deduction
tax write-off for expenses of doing business
exemption
a deduction allowed to a taxpayer because of his status (having certain dependents or being blind or being over 65 etc.)
entertainment deduction
deduction allowed for some (limited) kinds of entertainment for business purposes
Type of:
write-down, write-off
(accounting) reduction in the book value of an asset
2

n reasoning from the general to the particular (or from cause to effect)

Synonyms:
deductive reasoning, synthesis
Types:
syllogism
deductive reasoning in which a conclusion is derived from two premises
Type of:
abstract thought, logical thinking, reasoning
thinking that is coherent and logical

n something that is inferred (deduced or entailed or implied)

Synonyms:
entailment, implication
Type of:
illation, inference
the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation
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