columella

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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 ?
Ectosexine equal, thinner or thicker than endosexine, ectosexine slightly columellate or with compact aspect, endosexine with stout and ramified columellae, both layers separated by an inconspicuous or conspicuous internal tectum.
Ectosexine and endosexine equally thick, ectosexine and endosexine columellate (apparently single columellae).
Ectosexine columellate, equal to or slightly thinner than endosexine, with compact inner layer and thinner scarcely columellate outer layer.
pollen surface psilate, microechinate or echinate with a densely columellate exine) is secondarily helpful for delimitating the subfamily.
lophate in some Arctoteae, Barnadesioideae, Lactuceae, and Vernonieae); and (8) exine structure always densely columellate with stout columellae (vs.
The pollen grains have the exine distinctly bilayered, with both ectosexine and endosexine clearly columellate, a pattern that is consistent throughout the tribe (Crisci, 1974a; Cabrera, 1977; Telleria et al.
1 [micro]m thick and comprises a single columellate layer subtended by a single, compact internal tectum.