Definitions

from The Century Dictionary.

  • noun In embryology, provided with very little and uniformly distributed food-yolk: a term applied to certain eggs, such as those of the sponges, sea-urchins, etc.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Biol.) Applied to those ova which segment uniformly, and which have little or no food yelk embedded in their protoplasm.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective biology Tending to segment uniformly, and having little or no yolk embedded in the protoplasm.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

a-1 + lecith(in) + -al1.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek

Examples

  • Such an ovum as that of our present type, however being devoid of such yolk (alecithal = without yolk), necessitates a very early start in life, and, for reasons too complicated to state fully here, the development in such a case is considered particularly instructive and primitive by zoologists.

    Text Book of Biology, Part 1: Vertebrata

  • (alecithal), and, therefore, we find it dividing completely and almost equally.

    Text Book of Biology, Part 1: Vertebrata

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