'limen' definitions:

Definition of 'limen'

From: WordNet
noun
The smallest detectable sensation [syn: threshold, limen]

Definition of 'limen'

From: GCIDE
  • limen \limen\ n. (Psychol.) a threshhold, especially the point where a psychological or physiological effect begins to occur. [PJC]

Synonyms of 'limen'

From: Moby Thesaurus