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1. Dependent on chance, luck, or an uncertain outcome: an aleatory contract between an oil prospector and a landowner.
2. Of or characterized by gambling: aleatory contests.
3. also a·le·a·to·ric (ā′lē-ə-tôr′ĭk) Music Using or consisting of sounds to be chosen by the performer or left to chance; indeterminate: An object placed inside the piano added an aleatory element to the piece.

[Latin āleātōrius, from āleātor, gambler, from ālea, game of chance, die.]


(ˈeɪlɪətərɪ; -trɪ) or


1. dependent on chance
2. (Classical Music) (esp of a musical composition) involving elements chosen at random by the performer
[C17: from Latin āleātōrius, from āleātor gambler, from ālea game of chance, dice, of uncertain origin]


(ˈeɪ li əˌtɔr i, -ˌtoʊr i, ˈæl i-)

also a•le•a•tor•ic

(ˌeɪ li əˈtɔr ɪk, -ˈtɒr-, ˌæl i-)

1. Law. depending on an uncertain event: an aleatory contract.
2. of or pertaining to luck or chance; unpredictable.
3. Music. employing the element of chance in the choice of tones, rests, durations, rhythms, dynamics, etc.
[1685–95; < Latin āleātōrius, adj. derivative of āleātor gambler (āle(a) game of chance)]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.aleatory - dependent on chancealeatory - dependent on chance; "the aleatory element in life"
unpredictable - not capable of being foretold


adj (Jur) → aleatorisch, vom Zufall abhängig; aleatory contractaleatorischer Vertrag, Spekulationsvertrag m
References in periodicals archive ?
One-hundred and thirty questionnaires were aleatorily given to persons that shopped at the open-air market in the period from April to November 2005, in order to verify the demand for game meat.