x : Idioms & Phrases

Index

factor x

  • noun coagulation factor that is converted to an enzyme that converts prothrombin to thrombin in a reaction that depends on calcium ions and other coagulation factors
    prothrombinase.
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gen x

  • noun the generation following the baby boom (especially Americans and Canadians born in the 1960s and 1970s)
    gen X.
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generation x

  • noun the generation following the baby boom (especially Americans and Canadians born in the 1960s and 1970s)
    gen X.
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leo x

  • noun son of Lorenzo de'Medici and pope from 1513 to 1521 who excommunicated Martin Luther and who in 1521 bestowed on Henry VIII the title of Defender of the Faith (1475-1521)
    Giovanni de'Medici.
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louis x

  • noun king of France (1289-1316)
    Louis le Hutin; Louis the Quarreller.
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malcolm x

  • noun militant civil rights leader (1925-1965)
    Malcolm Little.
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pius x

  • noun pope who condemned religious modernism; he was canonized in 1954 because of his interest in the poor (1835-1914)
    Giuseppe Melchiorre Sarto; Giuseppe Sarto.
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regression of y on x

  • noun the equation representing the relation between selected values of one variable (x) and observed values of the other (y); it permits the prediction of the most probable values of y
    regression equation.
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x chromosome

  • noun the sex chromosome that is present in both sexes: singly in males and doubly in females
    • human females normally have two X chromosomes
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x ray

  • noun electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
    X ray; X-radiation; roentgen ray.
  • noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
    X ray; X-ray photograph; roentgenogram; X-ray.
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x-axis

  • noun the horizontal axis in a plane coordinate system
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x-linked

  • adjective relating to genes or characteristics or conditions carried on the X chromosome
    • an X-linked mutation
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x-linked dominant inheritance

  • noun hereditary pattern in which a dominant gene on the X chromosome causes a characteristic to be manifested in the offspring
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x-linked gene

  • noun a gene located on an X chromosome
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x-linked recessive inheritance

  • noun hereditary pattern in which a recessive gene on the X chromosome results in the manifestation of characteristics in male offspring and a carrier state in female offspring
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x-linked scid

  • noun SCID in male children resulting from mutation of a gene that codes for a protein on the surface of T cells that allows them to develop a growth factor receptor
    X-linked SCID.
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x-or circuit

  • noun gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire
    XOR circuit; XOR gate.
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x-radiation

  • noun electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
    X ray; X-radiation; roentgen ray.
  • noun obtaining images by the use of X rays
    X-radiation.
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x-ray

  • noun electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
    X ray; X-radiation; roentgen ray.
  • noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
    X ray; X-ray photograph; roentgenogram; X-ray.
  • verb examine by taking x-rays
    x-ray.
  • verb take an x-ray of something or somebody
    x-ray.
    • The doctor x-rayed my chest
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x-ray diffraction

  • noun the scattering of X rays by the atoms of a crystal; the diffraction pattern shows structure of the crystal
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x-ray film

  • noun photographic film used to make X-ray pictures
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x-ray machine

  • noun an apparatus that provides a source of X rays
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x-ray photograph

  • noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
    X ray; X-ray photograph; roentgenogram; X-ray.
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x-ray photography

  • noun radiography that uses X-rays to produce a roentgenogram
    roentgenography.
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x-ray picture

  • noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
    X ray; X-ray photograph; roentgenogram; X-ray.
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x-ray therapy

  • noun the therapeutic use of X rays
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x-ray tube

  • noun a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays
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x-raying

  • noun obtaining images by the use of X rays
    X-radiation.
  • verb examine by taking x-rays
    x-ray.
  • verb take an x-ray of something or somebody
    x-ray.
    • The doctor x-rayed my chest
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x-scid

  • noun SCID in male children resulting from mutation of a gene that codes for a protein on the surface of T cells that allows them to develop a growth factor receptor
    X-linked SCID.
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