columella


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

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.

col·u·mel·la

, pl.

col·u·mel·lae

(kol'ū-mel'ă, -mel'ē),
1. A column, or a small column. Synonym(s): columnella
2. In fungi, a sterile invagination of a sporangium, as in Zygomycetes.
[L. dim. of columna, column]

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.

columella

(kŏl′yə-mĕl′ə, kŏl′ə-)
n. pl. colu·mellae (-mĕl′ē)
Any small columnlike structure in various plants and animals, often forming the central axis of development for the organism or an anatomical structure.

col′u·mel′lar (-mĕl′ər) adj.
col′u·mel′late′ (-mĕl′āt′) adj.

columella

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

col·u·mel·la

, pl. columellae (kol'yū-mel'ă, -ē)
1. A small column.
Synonym(s): columnella.
2. In fungi, a sterile invagination of a sporangium, as in Zygomycetes.
[L. dim. of columna, column]

columella

The ridge of skin between the nostrils.
Columellaclick for a larger image
Fig. 117 Columella (2). The sporangium of Mucor.

columella

  1. the sterile central column in the sporangia of mosses and liverworts.
  2. the domed structure forming a pillar supporting the sporangium of some fungi, e.g. Mucor. See Fig. 117 .
  3. the central area of a root cap which contains STATOLITHS (1).
  4. the central axis of a fruit.

Columella

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

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.
References in periodicals archive ?
vittata has a far more prominent spire, deeper body whorl, narrower umbilicus, and a more extensively flared aperture lip, often with a wide extension in the columella region that partially obscures the umbilicus at full maturity.
Aperture wide and columella flattened, whorls variously carinated, and are found at low water mark.
Columella, published in 1779 and never again, nonetheless seems to have had a decided impact on Jane Austen's imaginative memory--and, of course, on that of Mrs.
Columella was familiar with both authors, and he tells us that, before leaving, bees make the sound of an army preparing to march.
The end of the columella is twisted within the aperture.
A number of authors have assumed that the shape of the muscle's physical attachment to the columella is small and circular, like the adductor muscle attachment in bivalves (e.
Indeed several editors of Columella have been content to print sometimes one form, sometimes the other; see G.
To define shell height, we used a line from the apex through the center of the columella and another line at a right angle to the first, which touched the edge of the lip.
When the stapes arch was destroyed by disease, a long columella ossiculoplasty was done.
It contains sweat and oil glands Philtrum Dent above top lip Columella nasi Skin separating the nostrils
1 Columella lacking any form of dentition or with at most a low rounded bulge at its base 2