Microcenton
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Similar to millicenton, microcenton was used exclusively in an early episode, "Lost Planet of the Gods, Part II". In it, Starbuck told Apollo he was "switching off of you for a microcenton to scan ahead." If you consider that the early use of the centon in the pilot episode was something closer to a week, the microcenton would be somewhere in the neighborhood of a half second, or one millionth of a week.
The term was superceded by micron.
See also: Units of Measure (TOS)