: the type genus of Ichthyornithidae comprising extinct birds of the Upper Cretaceous that have biconcave vertebrae, articulated quadrate bones, sharp conical teeth set in sockets, well-developed wings, and a keeled sternum and that are similar in size and probably in habits to a tern

Word History


New Latin, from ichthy- + -ornis

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Dictionary Entries Near Ichthyornis

Cite this Entry

“Ichthyornis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Ichthyornis. Accessed 21 May. 2024.

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