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hypogeous
hypogeum
hypoglossal
hypoglossal nerve
hypoglycemia
hypogynous
hypoid gear
hypokalemia
hypolimnion
hypomania
hyponasty
hyponatremia
hyponym
hypophyge
hypophysectomy
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hypopigmentation
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hypolimnion

hy·po·lim·ni·on [ hpə límnee òn, hpə límnee ən ] (plural hy·po·lim·ni·a [ hpə límnee ə ])


noun 
Definition:
 
water at lake bottom: the lower and colder layer of water in a lake, largely stagnant and remaining at a constant temperature ( technical )

[Early 20th century. <hypo- + Greek limnion "small lake" < limnē "lake"]
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