pre·lo·cal·iza·tion also Brit pre·lo·cal·isa·tion -.lō-kə-lə-'zā-shən n segregation in the egg or by early cleavage divisions of material destined to form particular tissues or organs
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pre·lo·cal·iza·tion (pre″lo-kəl-ĭ-zaґshən) the localization in the oocyte or blastomere of materials that will develop into a particular tissue or organ.Medical dictionary. 2011.