elm


elm
/elm/, n.
1. any tree of the genus Ulmus, as U. procera (English elm), characterized by the gradually spreading columnar manner of growth of its branches. Cf. American elm, elm family.
2. the wood of such a tree.
[bef. 1000; ME, OE; c. OHG elm; akin to ON almr, L ulmus]

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I
Any of about 18 species of forest and ornamental shade trees that make up the genus Ulmus (family Ulmaceae), native mostly to northern temperate areas.

Many are grown for their height and attractive foliage. The leaves are doubly toothed and often lopsided at the base. The flowers, which lack petals, appear before the leaves and are borne in clusters. Seeds are borne in a samara (dry, winged fruit). The American elm (U. americana) has dark gray, ridged bark and elliptical leaves. Many species are susceptible to Dutch elm disease. Elm wood is important for boats and farm buildings because it is durable in water; it is also used for furniture. See also slippery elm.

Leaves and fruit of an American elm tree.

Kitty Kahout/Root Resources
II
(as used in expressions)
red elm

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tree
      (genus Ulmus), any of about 18 species of forest and ornamental shade trees of the family Ulmaceae native primarily to North Temperate areas. Many are cultivated for their height and attractive foliage. Elm leaves are doubly toothed and often lopsided at the base. The petalless flowers appear before the leaves and are borne in clusters on jointed stems. The nutlike fruit, surrounded by a flat, sometimes hairy, winglike structure, is called a samara.

      The American elm (U. americana), of eastern North America, may grow 24 to 30 m (about 80 to 100 feet) tall. It has dark gray, ridged bark and elliptical leaves. Slippery, or red, elm (U. rubra), a shorter species with a similar but smaller distribution, has a gluelike substance in the inner bark, which was formerly steeped in water as a remedy for throat ailments, powdered for use in poultices, and chewed as a thirst-quencher. Rock, or cork, elm (U. thomasii) has hard wood and twigs that often develop corky ridges.

      Introduced species planted as ornamentals include Chinese elm (U. parvifolia), a small-leaved species with interesting mottled bark; English elm (U. procera), with a compact crown and deeply fissured bark; Wych elm (U. glabra), with smoother bark; and Camperdown elm (U. glabra camperdownii), a variety of Wych elm also known as umbrella elm because of its drooping branches. The fast-growing Siberian elm (U. pumila), a brittle-twigged, weak-wooded tree, is sometimes planted for quick shade and for windbreaks.

      Many elm species are susceptible to Dutch elm disease (a fungoid disease) and to elm phloem necrosis. Resistant strains are preferred for planting. Elm wood is important for boats and farm buildings because it is durable under water; it also is used for furniture.

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Universalium. 2010.

Look at other dictionaries:

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  • Elm — steht für: geografische Objekte Elm (Höhenzug), ein Höhenzug in Niedersachsen (Deutschland) Elm (Steiermark), Berg auf der steirischen Seite des Toten Gebirges ein waldreiches Gebiet im Naturpark Nördlicher Oberpfälzer Wald bei Vohenstrauß… …   Deutsch Wikipedia

  • Elm — Elm, n. [AS. elm; akin to D. olm, OHG. elm, G. ulme, Icel. almr, Dan. & Sw. alm, L. ulmus, and E. alder. Cf. {Old}.] (Bot.) A tree of the genus {Ulmus}, of several species, much used as a shade tree, particularly in America. The English elm is… …   The Collaborative International Dictionary of English

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  • Elm St. — Elm St. Saltar a navegación, búsqueda Elm St. Álbum de Ryan Cabrera Publicación 2001 (US) Género(s) Pop …   Wikipedia Español

  • elm — [elm] adj. [ME & OE, akin to OHG elm: see ELDER2] designating a family (Ulmaceae, order Urticales) of dicotyledonous trees growing largely in the North Temperate Zone n. 1. any of a genus (Ulmus) of tall, deciduous shade trees of the elm family,… …   English World dictionary

  • elm — [ elm ] noun 1. ) count a large tree with round leaves that fall off in winter 2. ) uncount the wood of the elm tree …   Usage of the words and phrases in modern English

  • elm — O.E. elm, from P.Gmc. *elmaz (Cf. Dan. elm, O.N. almr, O.H.G. elme), perhaps from PIE root *el red, brown (see ELK (Cf. elk)); cognate with L. ulmus, O.Ir. lem. Ger. Ulme, Du. olm are from or influenced by the L …   Etymology dictionary


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