Definitions

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

  • adj. Psychology Not strong enough to be perceived or to produce a response. Used of a stimulus.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Describing a stimulus that is not strong enough to elicit a response
  • adj. Below a threshold.
  • adj. subsyndromal

Etymologies

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