Jiffy

мгновение

mgnovenije

(very short, unspecified length of time)

мгновение ока

mgnovenije oka

(very short, unspecified length of time)

миг

mig

(very short, unspecified length of time)

минуту

minutu

(very short, unspecified length of time)

один момент

(very short, unspecified length of time)

систе́мный тик

sistémnyj tik

((computing) Unit of time defined by the frequency of its basic timer)