Medical

bilateral cleavage

Also found in: Encyclopedia.

bilateral cleavage

or

radial cleavage

the type of CLEAVAGE which gives rise to BILATERAL SYMMETRY. It occurs in echinoderms and CHORDATES. Compare SPIRAL CLEAVAGE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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