Definitions

from The Century Dictionary.

  • noun The sum of scientific knowledge concerning sleep.

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

  • noun A treatise on sleep; the doctrine of sleep.

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

  • noun A treatise on sleep; the doctrine or science of sleep.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek sleep + -logy.

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