Micron
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
A micron is a Colonial measurement of time and analogous to an Earth split second (specifically, 0.6 seconds). Its plural form is "microns".
There are one hundred (100) microns, as opposed to sixty (60) Earth seconds, in one (1) centons.
Original Series definition: unit of time akin to a "second"; Microcenton is likely another term for "micron"; Starbuck uses this term when he says "switching off of you for a microcenton to scan ahead" (TOS: "Lost Planet of the Gods, Part II")