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[ih-kol-uh-jee] /ɪˈkɒl ə dʒi/

the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.
Also called human ecology. the branch of sociology concerned with the spacing and interdependence of people and institutions.
a less common spelling of ecology
the study of the relationships between living organisms and their environment
the set of relationships of a particular organism with its environment
the study of the relationships between human groups and their physical environment

1873, “branch of science dealing with the relationship of living things to their environments, coined by German zoologist Ernst Haeckel (1834-1919) as Okologie, from Greek oikos “house, dwelling place, habitation” (see villa) + -logia “study of” (see -logy). In use with reference to anti-pollution activities from 1960s.

ecology e·col·o·gy (ĭ-kŏl’ə-jē)

ec’o·log’i·cal (ěk’ə-lŏj’ĭ-kəl, ē’kə-) or ec’o·log’ic (-ĭk) adj.
e·col’o·gist n.

The study of living things, their environment, and the relation between the two.


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  • Oecumenical

    [ek-yoo-men-i-kuh l or, esp. British, ee-kyoo-] /ˌɛk yʊˈmɛn ɪ kəl or, esp. British, ˌi kyʊ-/ adjective 1. . /ˌiːkjʊˈmɛnɪkəl/ adjective 1. a less common spelling of ecumenical

  • Oecus

    [ee-kuh s] /ˈi kəs/ noun, plural oeci [ee-sahy] /ˈi saɪ/ (Show IPA) 1. (in an ancient Roman house) an apartment, especially a dining room, decorated with columns.

  • OED

    1. Oxford English Dictionary. abbreviation 1. Oxford English Dictionary initialism of Oxford English Dictionary, attested from 1898, according to the “Oxford English Dictionary.” Oxford English Dictionary

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