an·​te·​cos·​ta | \ ˈantə̇ˌ-, -tē- \
plural antecostae or antecostas

Definition of antecosta

: the internal ridge that is externally manifested as a groove, that appears near the anterior margin of the typical dorsal or ventral plate of the primitive segment of an arthropod, and that provides attachment for the longitudinal muscles

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First Known Use of antecosta

1826, in the meaning defined above

History and Etymology for antecosta

New Latin, from ante- + costa

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The first known use of antecosta was in 1826

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Cite this Entry

“Antecosta.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2021.

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