noun, noun which may take the genitive case particle 'no', na-adjective
Refers to stimuli below the threshold of conscious perception, often used in psychology and advertising contexts. Can function as a noun, no-adjective, or na-adjective.
See also: 閾値下 (いきちか)
Research on the subliminal effect is progressing.
It is said that the advertisement contains a subliminal message.