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columella
(redirected from columellate)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
columella /col·u·mel·la/ (kol″u-mel´ah) pl. columel´lae   [L.]
1. a little column.
2. in certain fungi and protozoa, an invagination into the sporangium.

columella coch´leae  modiolus.
columella na´si  the fleshy external end of the nasal septum.

col·u·mel·la (kly-ml) or col·um·nel·la (klm-nl)
n. pl. col·u·mel·lae (-ml) or col·um·nel·lae (-nl)
A column-shaped anatomical structure.

colu·mellar (-mlr) adj.
colu·mellate (-mlt) adj.

Columella
The strip of skin running from the tip of the nose to the upper lip, which separates the nostrils.
Mentioned in: Rhinoplasty

columella,
1 a small column.
2 the fleshy terminal portion of the nasal septum.

columella [kol″u-mel´ah] (pl. columel´lae) (L.)
a little column.
columella na´si the fleshy external termination of the septum of the nose.

columella
pl. columellae [L.] a little column.

columella auris
a connecting rod between the avian eardrum and the perilymph of the inner ear via the rod's footplate.


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The pollen of the genera of Nassauvieae is tricolporate, microechinate with few developed microspines, the exine distinctly bilayered, and both the ectosexine and the endosexine clearly columellate (Crisci, 1974a) (see 109B of Figs.
Exine Mutisia type, microechinate, 7 [micro]m thick at the equator and 4-5 [micro]m thick at the poles, ectosexine slightly columellate.
The pollen of the Barnadesioideae differs from that of Mutisioideae because the exine is spongy, granulate, granulate--columellate or scarcely columellate and in some genera it is caveate (Urtubey & Telleria, 1998; Zao et al.
 
 
 
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