[ prob-uh-buh-lis-tik ]
/ ˌprɒb ə bəˈlɪs tɪk /
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin and History for probabilistic
1855, in a theological sense, from probabilist (1650s, from French probabiliste, 17c., from Latin probabilis, see probable) + -ic. Meaning "pertaining to probability" is from 1951. Related: Probabilism.
Online Etymology Dictionary, © 2010 Douglas Harper