IPA: //suːprəˈlɪmɪnəl//
KK: /suːprəˈlɪmɪnəl/
Referring to something that is above the level of awareness or consciousness, often used to describe stimuli that can be perceived but not consciously recognized.
The supraliminal messages in the advertisement were designed to influence viewers without them realizing it.
Supraliminal is formed from "supra-" (meaning above or beyond) and "liminal" (from Latin "limen", meaning threshold). The word refers to stimuli that are above the threshold of conscious perception, hence, beyond the limit of awareness.
Think of 'supra-' meaning 'above' and 'liminal' relating to a 'threshold' — this helps you remember that 'supraliminal' refers to things that are above the level of conscious awareness.