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columella
[ kol-yuh-mel-uh ]
noun
- any of various small, columnlike structures of animals or plants; rod or axis.
- Mycology. a small central column of sterile tissue within the sporangium of certain fungi, liverworts, and mosses.
- a small bone in the ear of amphibians, reptiles, and birds.
columella
/ ˌɒʊˈɛə /
noun
- biology
- the central part of the spore-producing body of some fungi and mosses
- any similar columnar structure
- Also calledcolumella aurisˈɔːrɪs a small rodlike bone in the middle ear of frogs, reptiles, and birds that transmits sound to the inner ear: homologous to the mammalian stapes
Derived Forms
- ˌDZˈ, adjective
Other Word Forms
- DZu·l adjective
- DZ···ٱ [kol-y, uh, -, mel, -it, -eyt], adjective
- DzcDZ··l adjective
- pseudo·DZu·l adjective
Word History and Origins
Origin of columella1
Word History and Origins
Origin of columella1
Example Sentences
A. effusa may be distinguished from all others by the columella being nearly obsolete; this part existing only in the two terminal whorls of the spire.
A. Shell cinereous-white, with two narrow brown bands, spire elongated, straight; volutions seven, slightly ventricose, inner lip rosy, base of the columella straight, entire, aperture ovate-oblong.
Thallus without epidermis; capsule with a columella, short-pedicelled or sessile on the thallus.
The delicate, spindle-shaped columellae lie ventral to the tegmen tympani and squamosals, are spatulate distally, and have a broad basal attachment to the auditory region.
It is the cartilagenous part of the columella that connects with the external sound detecting mechanism.
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