1. Of or relating to the mind
2. Involving the mind or an intellectual process
3. Affected by a disorder of the mind
4. (Biology) Of or relating to the chin- or lip-like structure in insects and certain mollusks.
5. Of or relating to the chin

ETYM Latin psychicus, Greek, from psyche the soul, mind; cf. French psychique.
1. Affecting or influenced by the human mind; SYN. psychical.
2. Outside the sphere of physical science; SYN. psychical.
3. Pertaining to forces or mental processes outside the possibilities defined by natural or scientific laws; SYN. psychical.