strat·​i·​fy ˈstra-tə-ˌfī How to pronounce stratify (audio)
stratified; stratifying

transitive verb

: to form, deposit, or arrange in strata
: to divide or arrange into classes, castes, or social strata
: to divide into a series of graded statuses

intransitive verb

: to become arranged in strata

Examples of stratify in a Sentence

Recent Examples on the Web This could mean non-coverage for certain patients who are otherwise indicated for a particular drug or different degrees of coverage for patients stratified into various sub-groups. Joshua Cohen, Forbes, 13 Nov. 2023 In an industry where planes are increasingly stratified with multiple distinct classes, there’s something refreshing about a civilized and elevated experience for all passengers. Chris Dong, Travel + Leisure, 17 Sep. 2023 Indeed, in its most recent trial, Lilly stratified patients by their level of tau, which is thought to be related to beta amyloid, into groups with intermediate and higher levels of tau. Robert Weisman,, 17 July 2023 When the surface water reaches a certain temperature, the lakes will stratify, creating layers that differ in their temperature, nutrients and oxygen levels. Caitlin Looby, Journal Sentinel, 26 May 2023 And the sortable nature of the USA Today database shows how stratified the highest levels of the Power 5 conferences get. Michael Casagrande |, al, 15 June 2023 Alarmingly, the study also found all the algorithms were worse at stratifying risk for Black men and women than for white. Ambar Castillo, STAT, 22 Feb. 2023 The net continued to grow as the American economy stratified. Hannah Zeavin, Harper's Magazine, 15 June 2022 But in years with low ice cover, the lakes warm up faster and stratify earlier, Fujisaki Manome said. Caitlin Looby, Journal Sentinel, 26 May 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'stratify.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin stratificare, from stratum + Latin -ificare -ify

First Known Use

1661, in the meaning defined at transitive sense 1

Time Traveler
The first known use of stratify was in 1661

Dictionary Entries Near stratify

Cite this Entry

“Stratify.” Dictionary, Merriam-Webster, Accessed 11 Dec. 2023.

Kids Definition


strat·​i·​fy ˈstrat-ə-ˌfī How to pronounce stratify (audio)
stratified; stratifying
: to form, deposit, or arrange in layers
stratified rock

More from Merriam-Webster on stratify

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