adj.
Pronunciation: ( ˌ )s ə - ' bli-m ə -n ə l
Function: adjective
Etymology: sub- + Latin limin-, limen threshold
Date: 1886
1 : inadequate to produce a sensation or a perception
2 : existing or functioning below the threshold of consciousness <the subliminal mind> < subliminal advertising>
– sub · lim · i · nal · ly adverb