
1) Psychological threshold 2) Sensation 3) Sense datum 4) Sense experience 5) Sense impression 6) Smallest detectable sensation 7) Stimulus threshold 8) Threshold 9) Threshold of pain
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https://www.crosswordclues.com/clue/limen

In physiology, psychology, or psychophysics, a limen or a liminal point is a threshold of a physiological or psychological response. Liminal, as an adjective, means situated at a sensory threshold, hence barely perceptible. The absolute threshold is the lowest amount of sensation detectable by a sense organ. ...
Found on
http://en.wikipedia.org/wiki/Limen

Entrance; the external opening of a canal or space, such as limen insulae. ... Synonym: threshold. ... Origin: L. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

(li´mәn) Latin word meaning threshold or boundary. limen of insula , limen insulae the point at which the cortex of the insula is continuous with the cortex of the frontal lobe. limen nasi the ridge marking the boundary between the ve...
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http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: lī′men, lim′i-nă Definitions: 1. Entrance; the external opening of a canal or space, such as limen insulae [TA]. Synonyms: threshold
Found on
http://www.medilexicon.com/medicaldictionary.php?t=50291

Latin = a threshold, hence, subliminal - below threshold.
Found on
https://www.encyclo.co.uk/local/21450
No exact match found.