(geology) A form of quartz with an unusual microscopic structure that has been deformed along planes inside the crystal by the application of extremely high pressure at moderate temperature; generally produced only by hypervelocity impact events, lightning strikes, and nuclear explosions.

(dated) Stunned or mentally unbalanced by prolonged stress such as experienced in combat or under fire (shell-fire); suffering from post-traumatic stress disorder.

simple past tense and past participle of shell shock

Synonym of electroconvulsive therapy / The use of a single, very large dose of a medicine

plural of culture shock

plural of electric shock

(music) A genre of rock music typified by elements of theatrical shock value in live performances.

plural of shock absorber

The symptoms that can be caused by unexpected loud sounds (an acoustic incident) received through a telephone headset.

plural of shock paddle