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TICK n. 1. Interval of time; basic clock time on the computer.
Typically 1/60 second. See JIFFY. 2. In simulations, the discrete unit
of time that passes "between" iterations of the simulation
mechanism. In AI applications, this amount of time is often left
unspecified, since the only constraint of interest is that caused
things happen after their causes. This sort of AI simulation is often
pejoratively referred to as "tick-tick-tick" simulation,
especially when the issue of simultaneity of events with long,
independent chains of causes is handwaved.