sto·​ma·​tal ˈstō-mə-tᵊl How to pronounce stomatal (audio)
: of, relating to, or constituting plant stomata
stomatal openings
stomatal transpiration

Examples of stomatal in a Sentence

Recent Examples on the Web Increasing water-use efficiency directly through genetic manipulation of stomatal density, New Phytologist. Christie Wilcox, Discover Magazine, 31 Mar. 2015 By counting these holes, or quantifying the stomatal index, scientists can learn how the plants adapted to changing levels of carbon dioxide. Rachael Lallensack, Smithsonian Magazine, 15 June 2020 Fossil Atmospheres’ ultimate goal is to determine the relationship between carbon dioxide and stomatal index. Meilan Solly, Smithsonian, 6 Aug. 2019

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

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of stomatal was in 1861

Dictionary Entries Near stomatal

Cite this Entry

“Stomatal.” Dictionary, Merriam-Webster, Accessed 27 Sep. 2023.

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