Elision, suppression, or complete loss of a letter or sound (syllable) from the beginning of a word, such as the development of special from especial; procope.
The removal of blood from a patient, and the removal of certain components (such as platelets) from that blood, followed by the transfusion of the filtered blood back to the donor (patient).
A temporary loss of consciousness.
The blocking out of as much light as possible.
A large-scale power failure, and resulting loss of electricity to consumers.
A temporary loss of memory.
The mandatory blocking of all light emanating from buildings, as well as outdoor and street lighting as a measure against aerial bombing or naval attack, as imposed during, e.g., World War II.
An instance of censorship, especially a temporary one.