[hahy-druh nt] /ˈhaɪ drənt/
an upright pipe with a spout, nozzle, or other outlet, usually in the street, for drawing water from a main or service pipe, especially for fighting fires.
a water faucet.
an outlet from a water main, usually consisting of an upright pipe with a valve attached, from which water can be tapped for fighting fires See also fire hydrant
1806, a hybrid coined in American English from Greek hydr-, stem of hydor “water” (see water (n.1)) + -ant.
[hahy-druh nth] /ˈhaɪ drənθ/ noun, Zoology. 1. the terminal part of a hydroid polyp that bears the mouth and tentacles and contains the stomach region. /ˈhaɪdrænθ/ noun 1. a polyp in a colony of hydrozoan coelenterates that is specialized for feeding rather than reproduction
[hahy-drahrk] /ˈhaɪ drɑrk/ adjective, Ecology. 1. (of a sere) originating in a wet habitat.
[hahy-drahr-juh-riz-uh m] /haɪˈdrɑr dʒəˌrɪz əm/ noun, Pathology. 1. . /ˌhaɪdrɑːˈdʒəɪrɪə/ noun 1. (med) mercury poisoning hydrargyria hy·drar·gyr·i·a (hī’drär-jĭr’ē-ə, -jī’rē-ə) or hy·drar·gy·rism (hī-drär’jə-rĭz’əm) n. See mercury poisoning.
[hahy-drahr-juh-lahyt] /haɪˈdrɑr dʒəˌlaɪt/ noun, Mineralogy. 1. .