Concise Oxford English Dictionary © 2008 Oxford University Press:ecology /ɪˈkɒlədʒi, ɛ-/
▶noun the branch of biology concerned with the relations of organisms to one another and to their physical surroundings. – derivatives ecological adjective, ecologically adverb, ecologist noun. – origin C19 (orig. as oecology): from Gk oikos ‘house’ + -logy. ' ecology' also found in these Oxford entries:
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