plural noun
Stere·​or·​ni·​thes | \ˌsterēˈȯrnəˌthēz, ˌstir-, -ˌȯrˈnī(ˌ)thēz\

Definition of Stereornithes 

in former classifications

: an artificial or a composite order of very large Miocene Patagonian birds believed to be ratite and mostly included in the order Gruiformes

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Other Words from Stereornithes

stereornithic \¦⸗⸗ˌȯr¦nithik \ adjective

History and Etymology for Stereornithes

New Latin, from stere- + -ornithes

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having a pattern of small flowers

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