siphuncle
Americannoun
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(in a nautilus) the connecting tube that passes from the end of the body through all of the septa to the innermost chamber.
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Entomology. an aphid cornicle.
Other Word Forms
- siphuncular adjective
- siphunculate adjective
- siphunculated adjective
Etymology
Origin of siphuncle
1895–1900; < Latin sīp ( h ) unculus small tube through which water is forced, equivalent to sīp ( h ) ōn-, stem of sīp ( h ) ō siphon + -culus -cule 1 ( see carbuncle)
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In Ammonoids the siphuncle is always marginal, and usually external.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various
An extinct genus of chambered shells, allied to the Ammonites, having the siphuncle near the dorsal margin.
From Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology by Lyell, Charles, Sir
Shell straight or curved, fusiform, aperture simple, siphuncle contracted at septa.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various
Carboniferous. a, Shell, reduced. b, Section, showing siphuncle.
From The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants by Dawson, Sir J. William
Extinct; phragmacone short with ventral siphuncle, prolonged dorsally into long pro�stracum; rostrum large and cylindrical.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
