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polyp

(Encyclopedia)polyp, in medicine, a benign tumor occurring in areas lined with mucous membrane such as the nose, gastrointestinal tract (especially the colon), and the uterus. Some polyps are pedunculated tumors, i...

cytosine

(Encyclopedia)cytosine sīˈtōsēnˌ [key], organic base of the pyrimidine family. It was isolated from the nucleic acid of calf thymus tissue in 1894. A suggested structure for cytosine, published in 1903, was co...

Homestead

(Encyclopedia)Homestead. 1 City (2020 pop. 80,737), Dade co., SE Fla.; inc. 1913. A large Miami suburb with a growing Hispanic population, Homestead is a trade ...

Freetown

(Encyclopedia)Freetown, city (1995 est. pop. 519,500), capital of Sierra Leone, W Sierra Leone, a port on the Atlantic Ocean. Located on the Sierra Leone peninsula, Freetown is the nation's administrative, communic...

Pensacola

(Encyclopedia)Pensacola pĕnsəkōˈlə [key], city (1990 pop. 58,165), seat of Escambia co., extreme NW Fla., on Pensacola Bay; inc. 1822. It is a port of entry with a natural harbor and shipping and fishing indus...

Tacoma

(Encyclopedia)Tacoma təkōˈmə [key], city (1990 pop. 176,664), seat of Pierce co., W Wash., on Commencement Bay and Puget Sound at the mouth of the Puyallup River; inc. 1884. It is a major seaport and railroad t...

plating

(Encyclopedia)plating, application of a plate, or coat, of metal to a surface for decoration, reflection of light, protection against corrosion, or increased wearing quality. The practice is of ancient origin: gild...

Pearl Harbor

(Encyclopedia)Pearl Harbor, land-locked harbor, on the southern coast of Oahu island, Hawaii, W of Honolulu; one of the largest and best natural harbors in the E Pacific Ocean. In the vicinity are many U.S. militar...

Sevastopol

(Encyclopedia)Sevastopol sĭvăsˈtəpōlˌ [key], formerly spelled Sebastopol, city (1989 pop. 355,000), on the Crimean peninsula and the Bay of Sevastopol, an inlet of the Black Sea. From 1954 part of Ukraine (th...

Portsmouth, cities, United States

(Encyclopedia)Portsmouth. 1 City (1990 pop. 25,925), Rockingham co., SE N.H., a port of entry with a good harbor and a state-owned port terminal at the mouth of the Piscataqua River opposite Kittery, Maine; inc. 16...