GNU Collaborative International Dictionary of English

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Found 2 definitions 

  1.       
ecology (ḗ‑kŏlˈṓ‑jy̆), n. [Gr. οἶκος house + -logy.] (Biol.) the branch of biology concerned with the various relations of animals and plants to one another and to their surrounding environment.

    [PJC]

    
      
    
  2.       
oecology (ḗ‑kŏlˈṓ‑jy̆), n. [Gr. οἶκος house + -logy.] (Biol.) The various relations of animals and plants to one another and to the outer world; -- now more commonly spelled ecology. [Also spelled ecology.]

    [1913 Webster]

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