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

First Known Use of pneumatocyst

1859, in the meaning defined at sense 1

History and Etymology for pneumatocyst

pneumato- + -cyst

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The first known use of pneumatocyst was in 1859

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Cite this Entry

“Pneumatocyst.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pneumatocyst. Accessed 19 Oct. 2020.

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More Definitions for pneumatocyst

pneumatocyst

noun
pneu·​ma·​to·​cyst | \ ˈn(y)ü-mət-ō-ˌsist How to pronounce pneumatocyst (audio) , n(y)u̇-ˈmat-ə- \

Medical Definition of pneumatocyst

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

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