R strain
rough strain a type of strain that results from bacterial dissociation; rough or R colonies have a dull, uneven surface and irregular border, the growth in fluid media tends to flake out, no capsules are seen, and the culture tends to be less virulent.

Medical dictionary. 2011.

Look at other dictionaries:

  • Strain — can refer to: * Strain (biology), a variant of a plant, virus or bacterium; or an inbred animal used for experimental purposes * Strain (chemistry), a chemical stress of a molecule * Strain (continuum mechanics), the deformation of materials… …   Wikipedia

  • Strain — Strain, v. t. [imp. & p. p. {Strained}; p. pr. & vb. n. {Straining}.] [OF. estraindre, estreindre, F. [ e]treindre, L. stringere to draw or bind tight; probably akin to Gr. ? a halter, ? that which is squeezwd out, a drop, or perhaps to E. strike …   The Collaborative International Dictionary of English

  • Strain engineering — refers to a general strategy employed in semiconductor manufacturing to enhance device performance. Performance benefits are achieved by modulating strain in the transistor channel, which enhances electron mobility (or hole mobility) and thereby… …   Wikipedia

  • străin — STRĂÍN, Ă, străini, e, adj., s.m. şi f. (Persoană) care face parte din populaţia altei ţări decât aceea în care se află sau trăieşte; (om, fiinţă) care este originară din altă regiune, localitate etc. decât aceea în care se află sau locuieşte,… …   Dicționar Român

  • Strain — Strain, n. 1. The act of straining, or the state of being strained. Specifically: [1913 Webster] (a) A violent effort; an excessive and hurtful exertion or tension, as of the muscles; as, he lifted the weight with a strain; the strain upon a ship …   The Collaborative International Dictionary of English

  • Strain Encoding MRI — Strain Encoding (SENC) in Magnetic Resonance ImagingSENC is a technique developed by Nael Osman s group at Johns Hopkins University for imaging the strain of deforming tissue using MRI. Introduction Strain encoding is the third type of encoding… …   Wikipedia

  • strain — strain1 [strān] vt. [ME streinen < OFr estraindre, to strain, wring hard < L stringere, to draw tight: see STRICT] 1. to draw or stretch tight 2. to exert, use, or tax to the utmost [to strain every nerve] 3. to overtax; injure by… …   English World dictionary

  • strain# — strain n 1 *variety, subspecies, race, breed, cultivar, clone, stock 2 streak, vein, *touch, suggestion, suspicion, soupçon, tincture, tinge, shade, smack, spice, dash strain vb 1 sprain (see under STRAIN n 2) *demur, scruple, balk, jib, shy,… …   New Dictionary of Synonyms

  • Strain scanning — refers to several diffraction based techniques using X rays and neutrons where the crystalline lattice of a material is, in effect, used as a form of strain gauge. The various methods are derived from powder diffraction but look for the small… …   Wikipedia

  • strain — [n1] pain, due to exertion ache, anxiety, bruise, brunt, burden, constriction, effort, endeavor, exertion, force, injury, jerk, pressure, pull, sprain, stress, stretch, struggle, tautness, tension, tensity, twist, wrench; concept 728 Ant. health …   New thesaurus

  • Strain rate — Strain rate, with regards to materials science, is the change in strain over the change in time and is denoted as έ.έ = δε/δtWe have :έ = δε/δt = frac{1}{ell 0} frac{dell}{dt} = frac{v}{ell 0}where ell 0 is the original length and v is the speed… …   Wikipedia

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