pneumatocyst

noun

pneu·ma·to·cyst | \ ˈn(y)ü-mə-tō-ˌsist

How to pronounce pneumatocyst (audio)

, n(y)u̇-ˈma-tə-\

Definition of pneumatocyst

1 : the air bladder of certain algae and aquatic plants … many seaweeds have floats called pneumatocysts, filled with oxygen or carbon dioxide.— Michael Le Page

2 : a benign, usually asymptomatic, gas-filled lesion found in bone especially of the ilium, sacrum, or spinal vertebra

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Dictionary Entries near pneumatocyst

pneumatographic

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The first known use of pneumatocyst was in 1859

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