from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Embryology Having the yolk unevenly distributed throughout the egg.
from The Century Dictionary and Cyclopedia
- In embryology, having the food-yolk distributed unequally, as in telolecithal and perilecithal eggs: opposed to homolecithal.
hetero- + Greek lekithos, egg yolk + -al1.(American Heritage® Dictionary of the English Language, Fourth Edition)