vesicle

Definitions

General Science

  • noun a rounded air-filled structure that helps seaweeds and aquatic plants to float
  • noun any small rounded structure filled with fluid or gas

Astronomy

  • Tiny gas bubble found in lava rocks on the Earth and other planets

Medical

  • noun a small blister on the skin, e.g. caused by eczema
  • noun a sac which contains liquid
http://www.dictionarycentral.com/definition/vesicle.html