(firearms, informal) The .22 Long Rifle calibre. / (firearms, informal) A firearm chambered in that calibre. / (rugby) The 22-metre line.

plural of 24-cell

(geometry) A four-dimensional polytope whose twenty-four bounding facets are octahedra and which has no three-dimensional analogue.

US standard spelling of 200 metres.

A phrase telling someone to pursue a path directly without deviations.

plural of catch-22

plural of Catch-22

(code word, euphemistic) Casualties for transportation in the Soviet and modern Russian military. In official use, cargo 200 refers to bodies contained in zinc-lined coffins, but in a military context it may be used for dead bodies as they are transported from the battlefield.

(computing) An issue for computing and data storage situations in which time values are stored or calculated as a signed 32-bit integer, and this number is interpreted as the number of seconds since 00:00:00 UTC on 1 January 1970. Such implementations cannot encode times after 03:14:07 UTC on 19 January 2038

Abbreviation of twenty-first.