adj.
Variant: also hyp · no · go · gic
Pronunciation: ˌ hip-n ə - ' gä-jik, - ' g ō -
Function: adjective
Etymology: French hypnagogique, from Greek hypn- + -ag ō gos leading, inducing, from agein to lead ― more at AGENT
Date: 1886
: of, relating to, or occurring in the period of drowsiness immediately preceding sleep < hypnagogic hallucinations>