Synonyms for Afterimage:

n.

afterimage (noun)
aftersensation.
cognition (noun)
aftersensation.
residue (noun)
remnant, remainder, Filings, leftovers, sawdust, residue, chaff, detritus, dross, vestige, precipitate, scum, debris, grounds, sediment, artifact, afterglow, slag, dregs.

Other synonyms:

Other relevant words:
aftersensation.