macrolecithal

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macrolecithal Applied to an egg that has a large yolk, typical of Myxinidae, Elasmobranchii, Teleostei, Chelonia, Sauria, Serpentes, Crocodilia, Aves, and Monotremata. Compare MESOLECITHAL; OLIGOLECITHAL. See also ISOLECITHAL; TELOLECITHAL.