[puh-lin-yuh] /pəˈlɪn yə/
an area of unfrozen sea water surrounded by ice.
a stretch of open water surrounded by ice, esp near the mouths of large rivers, in arctic seas
An area of open water surrounded by sea ice. A polynya can be formed by the presence of a heat source that keeps the area from freezing. A more complex process involves wind or ocean currents that carry ice away from the polynya, constantly exposing more ocean water to ice formation and resulting in the release of very salty, dense water that sinks to become part of a halocline.
polyodontia pol·y·o·don·ti·a (pŏl’ē-ō-dŏn’shē-ə, -shə) n. The presence of supernumerary teeth.
[pol-ee-es-truh s, -ee-struh s] /ˌpɒl iˈɛs trəs, -ˈi strəs/ adjective 1. .
[pol-ee-awl, -ol] /ˈpɒl iˌɔl, -ˌɒl/ noun, Chemistry. 1. an alcohol containing three or more hydroxyl groups; a polyhydric alcohol.
[pol-ee-oh-luh-fin] /ˌpɒl iˈoʊ lə fɪn/ noun, Chemistry. 1. any of a group of thermoplastic, stiff, light, and hard polymers obtained from the polymerization of simple like propylene, used for injection molding, mostly in the automotive and appliance industries.