| acouasm | a nonverbal auditory hallucination, such as a ringing or hissing. | |
| anoesis | a mental state devoid of cognitive content. | |
| eisegesis | an interpretation, especially of Scripture, which reflects the interpreter rather than the text. | |
| surd | (phonet.) (of a speech sound) unvoiced; (math obs.) irrational. | |
| ouphe | an elf or goblin. | |
| heteroptics | hallucinatory vision. | |
| systemoid | (pathol.) (of a tumor) having an internal structure resembling that of an organ. | |
| ghost word | a word formed through error, as in reading or printing. | |
| Ginnungagap | in Scandinavian myth, a mist-filled primordial void. | |
| dauerschlaf | psychotherapy by means of prolonged drug-induced sleep. |