Archaeocyathid

[ ahr-kee-oh-sahy-uh-thid, ahr-kee-uh- ]
/ ˌɑr ki oʊˈsaɪ ə θɪd, ɑrˌki ə- /

noun

one of the marine invertebrates of the extinct phylum Archaeocyatha, widely distributed during the Cambrian Period, having a limy, typically conical or cylindrical skeleton composed of sievelike inner and outer walls.

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a cylindrical wooden container with slightly bulging sides.
Worn down by dullness, tedious repetition.
unproductive; unfruitful
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Origin of Archaeocyathid

<New Latin Archaeocyath(us) genus name (archaeo-archaeo- + Latin cyathus ladle <Greek kýathos) + -id2

Words nearby Archaeocyathid

archaebacteria, archaebacterium, archaeo-, archaeoastronomy, archaeobotany, Archaeocyathid, archaeol., archaeological, archaeologist, archaeology, archaeomagnetism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020