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chilidium. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
From chil(o)-, alternative form of cheilo- + -idium.
Noun
chilidium (plural chilidia)
- (zoology) A plate covering a portion of the dorsal valve in certain brachiopods.
1895, Charles Schuchert, A Synopsis of American Fossil Brachiopoda Including Bibliography and Synonymy:The chilidium is a convex plate often covering the cardinal process of the dorsal valve in the Protremata.
1938, Edward Oscar Ulrich, Ozarkian and Canadian Brachiopoda, page 73:The chilidium is not often visible in the dorsal valve of Billingsella but when seen proves to be an arch with its piers built against the notothyrial edge.
Derived terms