orthokineticadj.

1927 Chem. Abstr. 21 2832 Coagulation under the influence of a motion of particles in the same direction, as in sedimentation, is called orthokinetic, and is here investigated for the first time.

1938 Science 2 Sept. 202/2 It has been shown that the forces of perikinetic and orthokinetic coagulation operate in soil suspensions carried by streams.

1979 Chem. Engin. Sci. 34 983/1 Orthokinetic flocculation is a common industrial unit operation, and is particularly applied in water treatment.

1998 J. F. Ranville & R. L. Schmiermund in D. L. Macalady Perspectives in Environmental Chem. ii. 37 Collisions also occur when particles are being transported in zones of steep fluid, and consequently particle, velocity profiles (orthokinetic flocculation).

1951 Jrnl. Animal Ecol. 20 6/1 The orthokinetic response of chitons to different light intensities results in their tending to aggregate more or less automatically in the shaded regions.

1958 J. D. Carthy Introd. Behaviour Invertebr. xii. 317 When the stones are beneath the surface..they [sc. chitons] do not tend to congregate by a simple orthokinetic response.

1973 Nature 16 Nov. 168/1 An orthokinetic effect may serve to influence adult movements, as their rate of progress over the reefs is almost certainly affected by the ease with which they can find adequate food and shelter from daylight.

1999 Proc. National Acad. Sci. U.S.A. 96 5035/2 In vegetative cells, the Frz system is involved in an orthokinetic response to an unknown substance produced by swarming cells.