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heterocyst

[het-er-uh-sist] /ˈhɛt ər əˌsɪst/
noun, Bacteriology
1.
one of the enlarged nitrogen-fixing cells occurring along the filaments in some blue-green algae.
Origin
1870-1875
1870-75; hetero- + cyst
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for heterocyst
  • Arrow points to the heterocyst, the site of atmospheric nitrogen fixation.

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