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Answer for the clue "(mathematics) an expression such that each term is generated by repeating a particular mathematical operation ", 9 letters:
recursion

Word definitions for recursion in dictionaries

WordNet Word definitions in WordNet
n. (mathematics) an expression such that each term is generated by repeating a particular mathematical operation

Wikipedia Word definitions in Wikipedia
Recursion in computer science is a method where the solution to a problem depends on solutions to smaller instances of the same problem (as opposed to iteration ). The approach can be applied to many types of problems, and recursion is one of the central ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1610s, from Latin recursionem (nominative recursio ) "a running backward, return," noun of action from past participle stem of recurrere "run back" (see recur ).

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Recursion \Re*cur"sion\ (-sh?n), n. [L. recursio. See Recur .] The act of recurring; return. [Obs.] --Boyle. (Math.) The calculation of a mathematical expression (or a quantity) by repeating an operation on another expression which was derived by application ...

Wiktionary Word definitions in Wiktionary
n. 1 The act of recurring. 2 (context mathematics English) The act of defining an object (usually a function) in terms of that object itself. 3 (context computing English) The calling of a function from within that same function.

Usage examples of recursion.

Lovering laughs off recursion and takes up another tack: the key is to find some formal symmetry folded in this four-base chaos.

You use recursion for certain data-sorting algorithms and things like that.

The coastline was an indefinite recursion of islands and straits and inlets.

I recognize as well the patterns he has linked through a partial recursion that has the lean elegance of most of his solutions.

Crowding under slowworms of lit glass spelling names and services, simple animationsa red-mouthed lady drawn with the light, replaced stutteringly with another who had raised her glass, and back again in autistic illuminant recursion.

You use recursion for certain data-sorting algorithms and things like that.

Looking outward, she no longer saw, but continued imagining a vista of everchanging patterns, stretching into infinite recursion across the cloud-flecked sky.

Another obvious thing for a gene to do is to influence the depth of the recursion, the number of successive branchings.

Personally, I always thought there was a clue from computer programming, in a procedure called recursion.

Being able to glance out into this bewildering complexity of infinite recursion and say things like, `Oh, hi Ed!

Being able to glance out into this bewildering complexity of infinite recursion and say things like, 'Oh, hi Ed!