semi·​ter·​res·​tri·​al | \ ˌse-mē-tə-ˈre-strē-əl How to pronounce semiterrestrial (audio) , ˌse-ˌmī-, -mi-, -ˈres-chəl, -ˈresh- \

Definition of semiterrestrial

1 : growing on boggy ground
2 : frequenting but not living wholly on land

Examples of semiterrestrial in a Sentence

Recent Examples on the Web The researchers found 902 genes in 22 gene families that the two semiterrestrial algae and land plants shared but that other algae lacked. Elizabeth Pennisi, Science | AAAS, "Alien genes from bacteria helped plants conquer the land," 14 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'semiterrestrial.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of semiterrestrial

1919, in the meaning defined at sense 1

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The first known use of semiterrestrial was in 1919

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Cite this Entry

“Semiterrestrial.” The Dictionary, Merriam-Webster Inc., Accessed 28 January 2020.

Comments on semiterrestrial

What made you want to look up semiterrestrial? Please tell us where you read or heard it (including the quote, if possible).


showing steady, earnest care and effort

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