A celestial source of radiation, such as x-rays or gamma rays, that is very intense for brief periods of time and whose nature has not yet been established.

An abnormally double flower having the calyx split or fragmented.

An off-line device in a computer system used to separate the continuous roll of paper produced as output from a printer into individual sheets, generally along perforations in the roll.

An explosive element used in chemical ammunition such as bombs, mines, and shells to open the container and disperse the contents.