from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An air vesicle.
from the GNU version of the Collaborative International Dictionary of English
- n. One of the air cells of algals.
from The Century Dictionary and Cyclopedia
- n. In botany, the air-vessel or bladder by means of which many algæ, as Fucus vesiculosus, are supported in the water, and oceanic species, as the gulfweed, float on the surface. See cut under air-cell.
aero- + cyst (Wiktionary)