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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «T»:

  1. Tok- Tok-
    Tok-: From the Greek word "tokos" meaning childbirth, we have toc-, toco-, tok-, and toko- as combining forms, all referring to labor or childbirth....
  2. Toko- (prefix) Toko- (prefix)
    Toko- (prefix): Stemming from the Greek word "tokos" meaning childbirth, we have toc-, toco-, tok-, and toko- as combining forms, all referring to labor or childbirth....
  3. Tolerance Tolerance
    Tolerance: A state in which a T cell can no longer respond to antigen. The T cell "tolerates" the antigen. Also called immune tolerance....
  4. Tolerance, immune Tolerance, immune
    Tolerance, immune: See: Immune tolerance....
  5. Toll receptor Toll receptor
    Toll receptor: One of a family of receptors that provide a critical link between immune stimulants produced by microorganisms and the initiation of the host defense. Activation of the toll receptors causes the release of antimicrobial peptides, inflammatory cytokines, and molecules that initiate ada...
  6. Toll-like receptor 4 Toll-like receptor 4
    Toll-like receptor 4: TLR4. One in a family of receptors that provide critical links between immune stimulants produced by microorganisms and the initiation of host defenses. Abbreviated TLR4. TLR4 is a transmembrane lipopolysaccharide receptor. Activation of it causes the release of antimicrobial ...
  7. Toluidine Toluidine
    Toluidine: A chemical compound implicated, along with aniline, in the causation of bladder cancer. Aniline and o-toluidine -- both compounds are aromatic amines -- are used in the manufacture of a variety of dyes, pharmaceuticals, pesticides, and chemicals employed in the manufacture of rubber. The...
  8. Tom- Tom-
    Tom-: Or tomo- before a consonant. A combining form meaning a cut, section, slice or layer, as might be achieved by cutting or slicing. Used in the formation of compound words such tomography. From the Greek tomos (a cutting)....
  9. Tomo- Tomo-
    Tomo-: Or tom- before a vowel. A combining form meaning a cut, section, or layer, as might be achieved by cutting or slicing. Used in the formation of compound words such tomography. From the Greek tomos (a cutting)....
  10. Tomogram Tomogram
    Tomogram: A radiograph (x-ray) of a selected layer of the body made by tomography. A tomogram is a two-dimensional image representing a slice or section through a three-dimensional object. The term tomogram may be made more specific, as in nephrotomogram (tomogram of the kidney)....
  11. Tomograph Tomograph
    Tomograph: The apparatus for generating a tomogram, a two-dimensional image of a slice or section through a three-dimensional object. The tomograph achieves this remarkable feat by simply moving an x-ray source in one direction as the x-ray film is moved in the opposite direction during the exposure...
  12. Tomography Tomography
    Tomography: The process for generating a tomogram, a two-dimensional image of a slice or section through a three-dimensional object. Tomography achieves this remarkable result by simply moving an x-ray source in one direction as the x-ray film is moved in the opposite direction during the exposure t...
  13. Tomography, computerized Tomography, computerized
    Tomography, computerized: See: Computerized tomography....
  14. Tomography, computerized axial Tomography, computerized axial
    Tomography, computerized axial: Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot be seen in conventional X...
  15. Tone deafness Tone deafness
    Tone deafness: The inability to recognize musical tones or reproduce them. Also called amusia....