transmigration

Movement from one site to another; may entail the crossing of some usually limiting barrier, as in the passage of blood cells through the walls of the vessels (diapedesis). [L. transmigro, pp. -atus, to remove from one place to another]

- ovular t. the passage of an ovum from one ovary into the fallopian tube of the other side; external ovular t., direct ovular t. occurs when the ovum passes across the pelvic cavity; internal ovular t., indirect ovular t. occurs when the ovum crosses the uterine cavity and so enters the tube of the opposite side.

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n.

the act of passing through or across, e.g. the passage of blood cells through the intact walls of capillaries and venules (see diapedesis).

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trans·mi·gra·tion (trans″mi-graґshən) 1. a wandering, especially a change of place from one side of the body to the other. 2. diapedesis.