gas·​ter | \ ˈga-stər How to pronounce gaster (audio) \

Definition of gaster

: the enlarged part of the abdomen behind the pedicel in hymenopterous insects (such as ants)

Examples of gaster in a Sentence

Recent Examples on the Web Repletes gorge until their gasters, or the back end of their bodies, swell with the sweet stuff. Liz Langley, National Geographic, 30 Oct. 2019 Using a type of fluorescent microscopy, researchers from Pennsylvania State University watched fungal colonization in ants from the gaster, the rear end of the abdomen, to the head—and found no trace of fungal cells in the brain. Jennifer Lu, National Geographic, 18 Apr. 2019 The winter ants also store their food reserves in their gasters, or rear ends, which gives them a pretty spectacular silhouette. Aimee Levitt, Chicago Reader, 6 Sep. 2017

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

First Known Use of gaster

circa 1909, in the meaning defined above

History and Etymology for gaster

Greek gastēr

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Time Traveler for gaster

Time Traveler

The first known use of gaster was circa 1909

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Dictionary Entries Near gaster

gas tank



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Cite this Entry

“Gaster.” Dictionary, Merriam-Webster, Accessed 5 Jul. 2022.

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