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hydrobiology

[hahy-droh-bahy-ol-uh-jee]
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noun
  1. the study of aquatic organisms.
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Origin of hydrobiology

First recorded in 1925–30; hydro-1 + biology
Related formshy·dro·bi·o·log·i·cal [hahy-druh-bahy-uh-loj-i-kuh l] /ˌhaɪ drəˌbaɪ əˈlɒdʒ ɪ kəl/, hy·dro·bi·o·log·ic, adjectivehy·dro·bi·o·log·i·cal·ly, adverbhy·dro·bi·ol·o·gist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018