bang-bang

== English == === Pronunciation === === Adjective === bang-bang (not comparable) (control theory) Applied to a kind of feedback control, or controller, that switches abruptly between two states. (baseball) Of a play, very close between being an out and being safe. ==== Usage notes ==== (baseball): usually used in the form bang-bang play, however sometimes the word 'play' can be omitted. For example, bang-bang at first base. === See also === (control theory): hysteresis