columella

Tanımlar (İngilizce)

1. isim Any of various small structures in plants or animals that are columnar in shape.
2. isim The skin at the end of the septum which separates the nostrils.
3. isim In birds, reptiles, and amphibians, the small bone which carries vibration from the tympanum to the inner ear.
4. isim In gastropods, the structure that extends down the middle of the whorls of the shell.
5. isim The structure at the center of the calyx where the septa join together.
6. isim The central sterile portion of the sporangium in various fungi.
7. isim A rod-shaped reinforcing element of the sexine layer of a pollen grain.