| RPT | rapid pull-through; refractory period of transmission; Registered Physical Therapist; renal parenchy... |
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| t | Greek lower case letter tau; life [of radioisotope]; relaxation time; shear stress; spectral transmi... |
| TCP/IP | transmission control protocol/Internet protocol |
| TCT | thrombin clotting time; thyrocalcitonin; trachial cytotoxin; transmission computed tomography |
| Tp | primary transmission; Treponema pallidum; tryptophan |
| electron transport chain | <biochemistry, chemistry> A series of compounds that transfer electrons to an eventual donor with concomitant energy conversion. One of the best studied is in the mitochondrial inner membrane, that takes NADH (from the tricarboxylic acid cycle) or FADH and transfers electrons via ubiquinone, cytochromes and various other compounds, to oxygen. Other electron transport chains are involved in photosynthesis. (18 Nov 1997) |
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| electron transport particles | <cell biology> Fragments of mitochondria still capable of transporting electrons. One of the units occurring on the matrical surface of mitochondrial cristae; the head of the particle which measures about 9 nm, attaches to the membrane of the crista by a stalk 5 nm in length; the particle may be concerned with the electron transport system. Synonym: submitochondrial particles. (05 Mar 2000) |
| electron transport phosphorylation | <biochemistry> Synthesis of ATP involving a membrane associated electron transport chain and the creation of a proton-motive force. (09 Oct 1997) |
| electron transport system | The mitochondrial electron transport chain. (18 Nov 1997) |
| electron velocity | <physics> The rate of motion of an electron. (05 Aug 1998) |
| electron-volt | <unit> A general unit of energy of moving particles, equal to the kinetic energy acquired by an electron losing one volt of potential, equal to 1.602 x 10-19 J. This is the energy an electron (or other particle of charge=1 such as a proton), gains as it is accelerated through a potential difference of 1 volt. In plasma physics the electron-volt is used as a unit of temperature when the mean particle energy is 1 eV, the temperature of the plasma is roughly 11, 600 Kelvin (the conversion from eV to K is via the Boltzmann constant). Abbreviation: eV (09 Oct 1997) |
| electron wavelength | <physics> The wavelength necessary to account for the deviation of electron rays in crystals by wave diffraction theory. It is numerically equal to the quotient of Planck's constant divided by the electron momentum, mv. = h / mv, where: h = Planck's constant m = mass of electron v = velocity of electron (05 Aug 1998) |
| emission electron | <physics>? A beta particle resulting from radioactive decay. (05 Mar 2000) |
| transition electron | An electron that moves from one energy level to another to fill a vacancy in a shell, with the emission of characteristic radiation. (05 Mar 2000) |
| free electron | <radiobiology> An electron not bound to an atom, molecule, or other particle via electromagnetic forces. (09 Oct 1997) |