beam


beam
1. Any bar whose curvature changes under load; in dentistry, frequently used instead of “bar.” 2. A collimated emission of light or other radiation, such as an x-ray b.. [O.H.G. Boum]
- Balkan b. SYN: Balkan frame.
- cantilever b. in dentistry, a b. that is supported by only one fixed support at only one of its ends.
- continuous b. in dentistry, a b. that continues over three or more supports, those supports not at the b. ends being equally free supports.
- electron b. a form of radiation used principally in superficial radiotherapy. See betatron.
- restrained b. in dentistry, a b. that has two or more supports, at least one of which permits some freedom of rotation to the point of support but not as much as if the support were a free support.
- simple b. in dentistry, a straight b. that has only two supports, one at either end.
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brain electrical activity monitoring

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beam 'bēm n
1) a ray or shaft of light
2) a collection of nearly parallel rays (as X-rays) or a stream of particles (as electrons)

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a cancer chemotherapy regimen consisting of BCNU (carmustine), etoposide, ara-C (cytarabine), and melphalan.

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • Beam — (b[=e]m), n. [AS. be[ a]m beam, post, tree, ray of light; akin to OFries. b[=a]m tree, OS. b[=o]m, D. boom, OHG. boum, poum, G. baum, Icel. ba[eth]mr, Goth. bagms and Gr. fy^ma a growth, fy^nai to become, to be. Cf. L. radius staff, rod, spoke of …   The Collaborative International Dictionary of English

  • Beam — may refer to: *Beam (structure), a construction element *Beam (nautical), the most extreme width (or breadth) of a nautical vessel, or a point alongside the ship at the mid point of its length *A narrow, propagating stream of particles or energy …   Wikipedia

  • BEAM — (englisch „Strahl“) steht für: Beam (Robotik), Sammelbegriff für eine bestimmte Sorte von Robotern Beam (Band), ein Musikduo Breite über alles (Schiffsbreite) Beam ist der Nachname folgender Personen: Jacob Beam (1760–1839, eigentlich Johannes… …   Deutsch Wikipedia

  • beam — beam·age; beam; beam·er; beam·fill·ing; beam·i·ly; beam·ing·ly; beam·ish; beam·less; beam·ster; semi·beam; white·beam; mi·cro·beam; …   English syllables

  • Beam — (englisch „Strahl“) steht für: Beam (Robotik), Sammelbegriff für eine bestimmte Sorte von Robotern Beam (Band), ein Musikduo Breite über alles (Schiffsbreite) Beam ist der Nachname folgender Personen: H. Beam Piper (1904–1964), US amerikanischer… …   Deutsch Wikipedia

  • beam — ► NOUN 1) a long piece of timber or metal used as a support in building. 2) a narrow horizontal length of timber for balancing on in gymnastics. 3) a ray or shaft of light or particles. 4) a radiant smile. 5) a ship s breadth at its widest point …   English terms dictionary

  • beam — [bēm] n. [ME < OE, a tree, piece of wood, column; akin to Ger baum, Du boom, tree] 1. Obs. the squared off trunk of a tree 2. a) a long, thick piece of wood, metal, or stone, used in building b) such a piece used as a horizontal support for a… …   English World dictionary

  • Beam — est un domaine de la robotique qui cherche à construire des robots avec le minimum de composants électroniques. La condition sinéquanone pour qu un robot soir considérré comme BEAM , inventée par le roboticien Mark Tilden, est de réduire au… …   Wikipédia en Français

  • Beam — 〈[bi:m] m. 6〉 Zielstrahl eines Satelliten [engl.] * * * Beam   [biːm; englisch »Richtstrahl«] der, s/ s, die Strahlungskeule eines Satellitensenders (Transponder); im Querschnitt kreisförmig, elliptisch oder in anderen gezogenen Rundformen,… …   Universal-Lexikon

  • beam — [n1] length of material used as support axle, bail, balk, bolster, boom, brace, cantilever, column, crossbar, crosspiece, girder, jamb, joist, lath, lintel, pile, piling, pillar, plank, pole, post, prop, rafter, reach, scaffolding, scantling,… …   New thesaurus

  • beam|y — «BEE mee», adjective, beam|i|er, beam|i|est. 1. like a beam; massive. 2. (of a ship) broad in the beam. 3. Figurative …   Useful english dictionary


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