Noun

(en noun)

That which is deducted; that which is subtracted or removed

A sum that can be removed from tax calculations; something that is written off

You might want to donate the old junk and just take the deduction .

(logic) A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.

A conclusion; that which is deduced, concluded or figured out

He arrived at the deduction that the butler didn't do it.

The ability or skill to deduce or figure out; the power of reason

Through his powers of deduction , he realized that the plan would never work.

Noun

(en noun)

Mental]] apprehension of whatever may be known, [[think, thought, or imagined; idea, concept.

* (Isaac Newton) (1642-1727)

What hath been generally agreed on, I content myself to assume under the notion of principles.

* (George Cheyne) (1671-1743)

Few agree in their notions about these words.

* (Isaac Watts) (1674-1748)

That notion of hunger, cold, sound, color, thought, wish, or fear which is in the mind, is called the "idea" of hunger, cold, etc.

* (Alexander Hamilton) (ca.1756-1804)

Notion , again, signifies either the act of apprehending, signalizing, that is, the remarking or taking note of, the various notes, marks, or characters of an object which its qualities afford, or the result of that act.

A sentiment; an opinion.

* (Joseph Addison) (1672-1719)

The extravagant notion they entertain of themselves.

* (John Henry Newman) (1801-1890)

A perverse will easily collects together a system of notions to justify itself in its obliquity.

*{{quote-book, year=1935, author= George Goodchild

, title=Death on the Centre Court, chapter=1 , passage=“Anthea hasn't a notion in her head but to vamp a lot of silly mugwumps. She's set her heart on that tennis bloke

(label) Sense; mind. Shakespeare.

(label) An invention; an ingenious device; a knickknack.

Any small article used in sewing and haberdashery, such as a button or zipper.

(label) Inclination; intention; disposition.