[ ey-lee-uh-tawr-ee, -tohr-ee, al-ee- ]
/ ˈeɪ li əˌtɔr i, -ˌtoʊr i, ˈæl i- /
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Law. depending on a contingent event: an aleatory contract.
of or relating to accidental causes; of luck or chance; unpredictable: an aleatory element.
Music. employing the element of chance in the choice of tones, rests, durations, rhythms, dynamics, etc.



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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Also a·le·a·tor·ic [ey-lee-uh-tawr-ik, -tor-, al-ee-]. /ˌeɪ li əˈtɔr ɪk, -ˈtɒr-, ˌæl i-/.

Origin of aleatory

1685–95; <Latin āleātōrius, equivalent to āleātōr- (stem of āleātor gambler (āle(a) game of chance + -ātor-ator) + -ius adj. suffix; see -tory1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for aleatory


aleatoric (ˌeɪlɪəˈtɒrɪk)

/ (ˈeɪlɪətərɪ, -trɪ) /


dependent on chance
(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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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