Definition of "milli" [milli]

• An element meaning ‘thousand,’ also used for ‘a thousandth part,’ especially in words relating to physics: as, millimeter (the thousandth part of a meter). (noun)

The Century Dictionary (Public Domain)

• "An FSH level above 30 (in units called milli-international units per milliliter), as measured in a blood test on any of the first six days of a woman's period, is the most reliable indication that she is in perimenopause."
• "The rapid movement of capital in and out of markets has taken this kind of short term thinking to an extreme, like stock trades where the assets are literally held for milli-seconds."
• "The milli - to picosecond time scales gave important information on chemical reactions."