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cyclopropane

(Encyclopedia) cyclopropane, C3H6, a gaseous hydrocarbon. It is a cyclic alkane, its three carbon atoms being joined together in a ring. The angle between successive carbon-carbon bonds in the ring…

dipper

(Encyclopedia) dipper, common name for the only aquatic member of the order Perciformes (perching birds) found near cold mountain streams. With their short, stubby wings and tails and their thick…

poison hemlock

(Encyclopedia) poison hemlock, lethally poisonous herbaceous plant (Conium maculatum) of the family Umbelliferae (parsley family). It has rank, finely divided foliage, flat-topped clusters of small…

partridge

(Encyclopedia) partridge, common name applied to various henlike birds of several families. The true partridges of the Old World are members of the pheasant family (Phasianidae); the common European…

flatfish

(Encyclopedia) flatfish, common name for any member of the unique and widespread order Pleuronectiformes containing over 500 species (including the flounder, halibut, plaice, sole, and turbot), 130…

desert lily

(Encyclopedia) desert lily, common name for the species Hesperocallis undulata, a member of the family Liliaceae (lily family), found in the SW United States.

quillwort

(Encyclopedia) quillwort, common name for several species of the plant genus Isoetes, which grow in ponds, slow streams, and swampy places. See Lycopodiophyta.

lodgepole pine

(Encyclopedia) lodgepole pine, common name for the pine species Pinus contorta, found in the Rocky Mts. and the northwestern coast of the United States.

touch-me-not

(Encyclopedia) touch-me-not, common name for any plant of the genus Impatiens of the jewelweed family. I. balsamina is also called balsam.

Ottawa, University of

(Encyclopedia) Ottawa, University of, at Ottawa, Ont., Canada; bilingual; provincially supported; founded 1848 as the College of Bytown. It became the Univ. of Ottawa in 1866. It has faculties of…