Found 1 definition: recursion.

[WORDNET DICTIONARY]

**recursion**(n = noun.cognition) - (mathematics) an expression such that each term is generated by repeating a particular mathematical operation;

is a kind of formula, rule

[CIDE DICTIONARY]

The act of recurring; return. *Boyle.* [*1913 Webster*]

[OXFORD DICTIONARY]

**recursion**, n.

1 the act or an instance of returning.

2 Math. the repeated application of a procedure or definition to a previous result to obtain a series of values.

Idiom:

recursion formula Math. an expression giving successive terms of a series etc.

Derivative:

recursive adj.

Etymology:

LL recursio (as RECUR)

[ROGET DICTIONARY]

**N**
repetition, iteration, reiteration, harping, recurrence, succession, run, battology, tautology, monotony, tautophony, rhythm, diffuseness, pleonasm, redundancy, chimes, repetend, echo, ritornello, burden of a song, refrain, rehearsal, rechauffe, rifacimento, recapitulation, cuckoo, reverberation, drumming, renewal, twice-told tale, old story, old song, second edition, new edition, reappearance, reproduction, recursion, periodicity, repeated, repetitional, repetitionary, recurrent, recurring, ever recurring, thick coming, frequent, incessant, redundant, pleonastic, monotonous, harping, iterative, recursive, unvaried, mocking, chiming, retold, aforesaid, aforenamed, above-mentioned, above-said, habitual, another, repeatedly, often, again, anew, over again, afresh, once more, ding-dong, ditto, encore, de novo, bis, da capo, again and again, over and over, over and over again, recursively, many times over, time and again, time after time, year after year, day by day, many times, several times, a number of times, many a time, full many a time, frequently, ecce iterum Crispinus, toujours perdrix, cut and come again, tomorrow and tomorrow and tomorrow, cantilenam eandem canis, nullum est jam dictum quod non dictum sit prius.

**N**
arrival, advent, landing, debarkation, disembarkation, reception, welcome, vin d'honneur, home, goal, goalpost, landing place, landing stage, bunder, resting place, destination, harbor, haven, port, airport, spaceport, terminus, halting place, halting ground, landing strip, runway, terminal, journey's end, anchorage, return, remigration, meeting, rencounter, encounter, completion, recursion, arriving, homeward bound, here, hither, Int, welcome!, hail!, all Hail!, good-day, good morrow!, any port in a storm.