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Grand Haven

(Encyclopedia) Grand Haven, city (2020 pop. 11,011), seat of Ottawa co., SW Mich., at the mouth of the Grand River; inc. 1867. It is a port on Lake…

Kansa

(Encyclopedia) KansaKansakănˈsô [key], people whose language belongs to the Siouan branch of the Hokan-Siouan linguistic stock (see Native American languages), also known as the Kansas or Kaw.…

scarlet fever

(Encyclopedia) scarlet fever or scarlatina, an acute, communicable infection, caused by group A hemolytic streptococcal bacteria (see streptococcus) that produce an erythrogenic toxin. The disease is…

Sidoarjo mudflow

(Encyclopedia) Sidoarjo mudflow or Lusi [Lumpur Sidoarjo, Bahasa Indonesia, = Sidoarjo mud], mud volcano, Sidoarjo regency, central East Java prov., Indonesia, 20 mi (30 km) S of Surabaya. In May,…

sand dollar

(Encyclopedia) sand dollar, common name for a marine animal in the same phylum as the starfish (see sea star). The sand dollar has a rigid, flattened, disk-shaped test, or shell, made of firmly…

Ponca

(Encyclopedia) Ponca, Native North Americans whose language belongs to the Siouan branch of the Hokan-Siouan linguistic stock (see Native American languages). According to tradition the group lived…

whale shark

(Encyclopedia) whale shark, large, plankton-eating shark, Rhincodon typus, found in all tropical seas of the world. Whale sharks are the largest fish in the world. A female typically reaches about 46…

polyp and medusa

(Encyclopedia) CE5 Polyp and medusa stages in the life cycle of Obelia, representative of the phylum Cnidaria polyp and medusa, names for the two body forms, one nonmotile and one typically free…

Mystic, rivers, United States

(Encyclopedia) Mystic. 1 River, c.10 mi (16 km) long, rising in SE Conn. and flowing S past Old Mystic and Mystic villages to the Long Island Sound. Mystic Seaport, a maritime museum, is at its mouth…

Mezen

(Encyclopedia) MezenMezenmyĕˈzĭnyə [key], river, c.565 mi (910 km) long, rising in the Timan Hills, Komi Republic, NE European Russia, and flowing NW into the Mezen Bay of the White Sea. Its lower…