ectocommensal

 [ek-toh-kuh-men-suhl]  

ec·to·com·men·sal

   [ek-toh-kuh-men-suhl]
adjective
1.
Biology. (of an organism) living in a commensal relationship on the exterior of another organism.
noun
2.
an ectocommensal organism.

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Ectocommensal is always a great word to know.
So is protoplasm. Does it mean:
a group of individuals or species having a common ancestry
the colloidal and liquid substance of which cells are formed, the cytoplasm and nucleus: no longer in technical use
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Origin:
1935–40; ecto- + commensal

Related forms
ec·to·com·men·sal·ism, ec·to·com·men·sal·i·ty  [ek-toh-kom-en-sal-i-tee] , noun
ec·to·com·men·sal·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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