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iso·lec·i·thal .ī-sō-'les-i-thəl adj of an egg having the yolk small in amount and nearly uniformly distributed compare CENTROLECITHAL, TELOLECITHAL
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iso·lec·i·thal (i″so-lesґĭ-thəl) [iso- + -lecithal] having small amounts of yolk evenly distributed throughout the cytoplasm, as in the eggs of mammals and echinoderms.Medical dictionary. 2011.