• WordNet 3.6
    • n limen the smallest detectable sensation
    • ***
Century Dictionary and Cyclopedia
    • n limen In experimental psychology and psychophysics, the threshold; the dividing line between noticeableness and unnoticeableness of stimulus. The limen is defined in physical or physiological terms as that amount of stimulus or degree of excitation (or as that stimulus difference or difference of excitation) which, after complete elimination of all errors, remains just noticeable to an accurate observer; or again as that amount of stimulus (or stimulus difference) which, after elimination of constant errors, remains just noticeable to the observer in one-half of a long series of observations. The term may be applied to any one of the four possible aspects of stimulus and excitation (intensity, quality, duration, extension), and to any stimulus that serves as the condition of mental state or process; so that we may speak of the intensive limen, the temporal limen, the affective limen, the limen of attention, etc. It is clear that the correlate of the limen, upon the mental side, is not a part of real experience, not a state or process that can be ideated and remembered and voluntarily reproduced: liminal values are always ideal values.
    • n limen In anatomy, the portion of brain-substance situated between the base and the island of Reil.
    • ***


In literature:

Ankoe; esti de limen homonumos].
"A New System; or, an Analysis of Antient Mythology. Volume I." by Jacob Bryant
Satur fu fere Mars, limen sali, sta berber!
"The Religious Experience of the Roman People" by W. Warde Fowler