WordReference Random House Learner's Dictionary of American English © 2015
het•er•o•ge•ne•ous /ˌhɛtərəˈdʒiniəs, -ˈdʒinyəs/USA pronunciation adj. 

    composed of parts of different kinds; mixed.
het•er•o•ge•ne•i•ty /ˌhɛtəroʊdʒəˈniɪti/USA pronunciationhet•er•o•ge•ne•ous•ness,n. [uncountable]
het•er•o•ge•ne•ous•ly, adv. See -hetero-, -gen-.

Collins Concise English Dictionary © HarperCollins Publishers::

heterogeneous /ˌhɛtərəʊˈdʒiːnɪəs/ adj
  1. composed of unrelated or differing parts or elements
  2. not of the same kind or type
Etymology: 17th Century: from Medieval Latin heterogeneus, from Greek heterogenēs, from hetero- + genos sort

heterogeneity /ˌhɛtərəʊdʒɪˈniːɪtɪ/, ˌheteroˈgeneousness n

'heterogeneous' also found in these entries:

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