Properdin system
properdin system n.
An alternative system by which, in the absence of antibodies bound to immunoglobulins and components of complement, the immunological cascade occurs, with the activation of critical components of complement aided by the stabilizing properties of properdin.
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- Proper fasciculus
proper fasciculus prop·er fasciculus (prŏp’ər) n. Any of several ascending and descending association fiber systems of the spinal cord that lie deep in the funiculi adjacent to the gray matter. Also called ground bundle.
- Proper-fraction
noun, Mathematics. 1. a fraction having the numerator less, or lower in degree, than the denominator. proper fraction noun 1. a fraction in which the numerator has a lower absolute value than the denominator, as 1/2 or x/(3 + x²) proper fraction (prŏp’ər) A fraction in which the numerator is less than the denominator, such […]
- Proper-function
noun, Mathematics. 1. eigenfunction.
- Properly
adjective 1. adapted or appropriate to the purpose or circumstances; fit; suitable: the proper time to plant strawberries. 2. conforming to established standards of behavior or manners; correct or decorous: a very proper young man. 3. fitting; right: It was only proper to bring a gift. 4. strictly belonging or applicable: the proper place for […]
- Proper-motion
noun 1. Astronomy. the angular motion of a star relative to a suitably defined frame of reference, expressed in seconds of arc per year. proper motion noun 1. the very small continuous change in the direction of motion of a star relative to the sun. It is determined from its radial and tangential motion proper […]