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anatrepsis (noun; Greek anatrepein, to turn over): 1. Increase of movement during blastokinesis.

2. (Arthropoda: Insecta) In blastokinesis, a term used to describe the movement of the embryo inside the egg from one pole to another; refers to different activities in different groups of insects, i.e., ventral to dorsal, dorsal to ventral

See also: katatrepsis.