| isolecithal | Denoting an ovum in which there is a moderate amount of uniformly distributed yolk. (05 Mar 2000) |
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| isolecithal egg | An egg in which the total amount of yolk is small and fairly uniformly distributed throughout the cytoplasm. Synonym: isolecithal egg. (05 Mar 2000) |
| isolecithal ovum | An ovum in which the yolk is evenly distributed throughout the cytoplasm. (05 Mar 2000) |