randomize

American

[ran-duh-mahyz] / ˈræn dəˌmaɪz /

especially British, randomise

verb (used with object)

randomized, randomizing

to order or select in a random manner, as in a sample or experiment, especially in order to reduce bias and interference caused by irrelevant variables; make random.

randomize British

/ ˈrændəˌmaɪz /

verb

(tr) to set up (a selection process, sample, etc) in a deliberately random way in order to enhance the statistical validity of any results obtained

"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

Other Word Forms

randomization noun
randomizer noun

Etymology

Origin of randomize

First recorded in 1925–30; random + -ize

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

To address that gap, the team searched research databases for systematic reviews and randomized clinical trials published through November 2025.

From Science Daily

The researchers also emphasized that this was not a randomized clinical trial, meaning participants were not randomly assigned to each treatment group.

From Science Daily

Both the short and longer interventions were randomized controlled trials.

From Science Daily

Dr. Prasad seems to believe the cost for drugs that receive accelerated approval exceed their benefits and that nothing short of large double-blind randomized controlled trials should be sufficient to prove a medicine’s efficacy.

From The Wall Street Journal

In these cases, no randomized trial will be required because it’s simply infeasible.

From The Wall Street Journal

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023