What does Ratitae mean?

Definitions for Ratitae

This dictionary definitions page includes all the possible meanings, example usage and translations of the word Ratitae.

Princeton's WordNet

  1. Ratitae, superorder Ratitaenoun

    used in former classifications to include all ratite bird orders


  1. ratitae

    A ratite () is any of a diverse group of flightless, large, long-necked, and long-legged birds of the infraclass Palaeognathae. Kiwi, the exception, are much smaller and shorter-legged and are the only nocturnal extant ratites. The systematics of and relationships within the paleognath clade have been in flux. Previously, all the flightless members had been assigned to the order Struthioniformes, which is more recently regarded as containing only the ostrich. The modern bird superorder Palaeognathae consists of ratites and the flighted Neotropic tinamous (compare to Neognathae). Unlike other flightless birds, the ratites have no keel on their sternum — hence the name, from the Latin ratis (raft, a vessel which has no keel - in contradistinction to extant flighted birds with a keel). Without this to anchor their wing muscles, they could not have flown even if they developed suitable wings. Ratites are a paraphyletic group; tinamous fall within them, and are the sister group of the extinct moa. This implies that flightlessness is a trait that evolved independently multiple times in different ratite lineages.Most parts of the former supercontinent Gondwana have ratites, or did have until the fairly recent past. So did Europe in the Paleocene and Eocene, from where the first flightless paleognaths are known. Ostriches were present in Asia as recently as the Holocene, although the genus is thought to have originated in Africa. However, the ostrich order may have evolved in Eurasia. A recent study posits a Laurasian origin for the clade. Geranoidids, which may have been ratites, existed in North America.


  1. ratitae

    Ratitae is a group or taxonomic category in the Class Aves (birds) that includes large, flightless birds such as ostriches, emus, and kiwis. These birds are characterized by a flat breastbone without a keel, which is why they cannot fly. The term "Ratitae" is often used to refer to these birds collectively.

Webster Dictionary

  1. Ratitae

    an order of birds in which the wings are small, rudimentary, or absent, and the breastbone is destitute of a keel. The ostrich, emu, moa, and apteryx are examples

  2. Etymology: [NL., fr. L. ratis a raft; cf. L. ratitus marked with the figure of a raft.]

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  1. Chaldean Numerology

    The numerical value of Ratitae in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of Ratitae in Pythagorean Numerology is: 2

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"Ratitae." Definitions.net. STANDS4 LLC, 2023. Web. 10 Dec. 2023. <https://www.definitions.net/definition/Ratitae>.

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    a light informal meal
    • A. collation
    • B. slur
    • C. preponderance
    • D. tithe

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