drift

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drift

 [drift]
1. slow movement away from the normal or original position.
2. a chance variation, as in gene frequency from one generation to another; the smaller the population, the greater are the random variations.
antigenic drift relatively minor changes in the antigenic structure of a virus strain, probably resulting from natural selection of variants circulating among an immune or partially immune population. See also antigenic shift.
ulnar drift ulnar deviation.

drift

(drift),
1. A gradual movement, as from an original position.
2. A gradual change in the value of a random variable over time as a result of various factors, some random and some systematic effects of trend, manipulation, etc.

drift

Orthopedics See Pronator drift Virology Antigenic drift, see there.

drift

(drift)
1. A gradual movement, as from an original position.
2. A gradual change in the value of a random variable over time as a result of various factors, some random and some systematic effects of trend or manipulation.

drift

see RANDOM GENETIC DRIFT.

drift

(drift)
In dentistry, movement of teeth usually medially due to loss of adjacent teeth or wear of proximal surfaces.
Synonym(s): mesial drift, migrating teeth.