Noun

The act of abstracting, separating, withdrawing, or taking away; withdrawal; the state of being taken away.

* 1848 , , Principles of Political Economy with some of their Applications to Social Philosophy :

The cancelling of the debt would be no destruction of wealth, but a transfer of it: a wrongful abstraction of wealth from certain members of the community, for the profit of the government, or of the tax-payers.

# (euphemistic) The taking surreptitiously for one's own use part of the property of another; purloining.

# (engineering) Removal of water from a river, lake, or aquifer.

A separation from worldly objects; a recluse life, as a hermit's abstraction ; the withdrawal from one's senses.

The act of focusing on one characteristic of an object rather than the object as a whole group of characteristics; the act of separating said qualities from the object or ideas.

* W. Hamilton, in Lectures on Metaphysics and Logic (1860), Lecture XXXV, page 474:

Abstraction is no positive act: it is simply the negative of attention.

Abstraction is necessary for the classification of things into genera and species.

The act of comparing commonality between distinct objects and organizing using those similarities; the act of generalizing characteristics; the product of said generalization.

An idea or notion of an abstract or theoretical nature.

to fight for mere abstractions .

Absence or absorption of mind; inattention to present objects; preoccupation.

(art) An abstract creation, or piece of art; qualities of artwork that are free from representational aspects.

(chemistry) A separation of volatile parts by the act of distillation.

An idea of an unrealistic or visionary nature.

The result of mentally abstracting an idea; the results of said process.

(geology) The merging of two river valleys by the larger of the two deepening and widening so much so, as to assimilate the smaller.

(computing) Any generalization technique that ignores or hides details to capture some kind of commonality between different instances for the purpose of controlling the intellectual complexity of engineered systems, particularly software systems.

(computing) Any intellectual construct produced through the technique of abstraction.

Noun

(wikipedia analysis)

(countable) Decomposition into components in order to study (a complex thing, concept, theory...).

* {{quote-magazine, year=2013, month=July-August, author= Philip J. Bushnell

, title= Solvents, Ethanol, Car Crashes & Tolerance, magazine=(American Scientist) , passage=Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.}}

(countable) The result of such a process.

*

Thus, in a sequence such as [French English teacher''], since ''English'' is closer to
the Head Noun ''teacher'', it must be a Complement; and since ''French'' is further
away from ''teacher'', it must be an Attribute. Hence, we correctly predict that
the only possible interpretation for [''a French English teacher ] is ‘a person who
teaches English who is French?. So our analysis not only has semantic plausi-
bility; but in addition it has independent syntactic support.

(uncountable, mathematics) The mathematical study of functions, sequences, series, limits, derivatives and integrals.

(countable, logic) Proof by deduction from known truths.

(countable, chemistry) The process of breaking down a substance into its constituent parts, or the result of this process.

(uncountable, music) The analytical study of melodies]], [[harmony, harmonies, sequences, repetitions, variations, quotations, juxtapositions, and surprisees.

(countable, psychology) Psychoanalysis.