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jawless

American  
[jaw-lis] / ˈdʒɔ lɪs /

adjective

  1. having no jaws, or no lower jaw.


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.

While jawed fishes remained isolated in South China, jawless vertebrates continued to thrive elsewhere and dominated the open oceans for another 40 million years.

From Science Daily • Jan. 11, 2026

The divots were created at a time when animals in the seas were taking on a broad array of new forms, building complex ecosystems from plankton to jawless fish to spaceship-like filter feeders.

From Slate • Oct. 21, 2024

"Previous feeding mode hypotheses of early jawless vertebrates have mainly been based on poorly constrained inferences. But using computational palaeobiological methods, we were able to actually test and reject one of these feeding mode hypotheses."

From Science Daily • Jan. 16, 2024

About 500 million years ago, vertebrates were jawless marine creatures with tails but no paired fins, and numerous, paired gill arches.

From Science Magazine • Nov. 1, 2023

His upper lip smiled, but Starnes's jawless chin couldn't follow suit.

From "An Abundance of Katherines" by John Green

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