[hahy-droh-nuh-froh-sis] /ˌhaɪ droʊ nəˈfroʊ sɪs/
dilation of the branches and pelvic cavity of the kidney, caused by an accumulation of urine resulting from obstruction of normal outflow.
hydronephrosis hy·dro·ne·phro·sis (hī’drō-nə-frō’sĭs)
The dilation of the pelvis and calices of one or both kidneys because of the accumulation of urine resulting from obstruction to urine outflow. Also called uronephrosis.
hy’dro·ne·phrot’ic (-frŏt’ĭk) adj.
[hahy-dron-ik] /haɪˈdrɒn ɪk/ adjective 1. of or relating to a heating system for a building in which the medium for carrying heat throughout the structure is circulating water, especially when the circulation is aided by a pump.
[hahy-druh-nahy-truh-juh n] /ˌhaɪ drəˈnaɪ trə dʒən/ noun 1. a chemical compound containing only hydrogen and .
[hahy-droh-nee-uh m] /haɪˈdroʊ ni əm/ noun 1. the hydrogen ion bonded to a molecule of water, H 3 O + , the form in which hydrogen ions are found in aqueous solution. /haɪˈdrəʊnɪəm/ noun 1. (chem) another name for hydroxonium ion
[hahy-druh-pak] /ˈhaɪ drəˌpæk/ noun 1. an urgent warning of navigational dangers in the Pacific Ocean, issued by the U.S. Navy Hydrographic Office.