vesicle
/ˈvesɪkl/noun
1- a fluid- or air-filled cavity or sac, in particular泡; 囊, 尤指：
1.1
- Anatomy & Zoology a small fluid-filled bladder, sac, cyst, or vacuole within the body【剖, 动】囊, 泡。
1.2
- Botany an air-filled swelling in a plant, especially a seaweed【植】（植物, 尤指海藻的）小泡, 泡囊。
1.3
- Geology a small cavity in volcanic rock, produced by gas bubbles【地质】气泡。
1.4
- Medicine a small blister full of clear fluid【医】小水疱。
派生词
vesicular
adjectivevesiculated
adjectivevesiculation
noun词源
late 16th cent.: from French vésicule or Latin vesicula, diminutive of vesica 'bladder'.