This can be an open and shut case so I apologize for wasting anyone's time (no pun intended).

I've been googling and all i have is of course understood that the Plank constant is the smallest measurement of space, although up for discussion, etc.

[This][1] doesn't really ... help at all.

I am a layman.  I'm not looking for a breakthrough.  I'd just like a term I may use (high-level) for a similar "smallest unit of time"?  I am not looking for a debate on how discrete time might be, but if there is a term I can use that loosely complement's Plank's constant for space (or better, if you have a suggestion) but for time.

Just a theoretical phrase for the smallest time that I can use as a literal comparison, not necessarily scientific.

  [1]: http://physics.stackexchange.com/questions/193095/smallest-measurable-time-increment