[ yoo-nuh-lin-ee-er ]
/ ˌyu nəˈlɪn i ər /
developing or evolving in a steady, consistent, and undeviating way.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for unilinear
Or, instead of a single individual, any number might be supposed, succeeding each other in a unilinear series.Creative Evolution|Henri Bergson