American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Having a spiral structure or spiral parts.
Century Dictionary and Cyclopedia
- Probably from New Latin spīrifer : Latin spīra, coil; see spire2 + Latin -fer, -fer. (American Heritage® Dictionary of the English Language, Fourth Edition)
“I presume that they are actually connected with the spiral vessels which run up the tentacles, for on several occasions the latter were seen to divide into two or three excessively thin branches, which could be traced close up to the spiriferous cells.”
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This quickly got bigger and weirder than originally intended, so now it's housing terms that relate to the study of dinosaurs and other prehistoric creatures. See also Dinosaurs, Pterosaurs, Ichthy...
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