- denoting 10–3: millimetreSymbol: m
WordReference Random House Learner's Dictionary of American English © 2026
milli-, prefix.
WordReference Random House Unabridged Dictionary of American English © 2026- Weights and Measuresmilli- comes from Latin, where it has the meanings:
- one thousand:milli- + -pede (= foot) → millipede (= a small creature with very many legs).
- (in the metric system) equal to 1&sfracdenom;1000&sfracend; of the unit mentioned:milli- + meter → millimeter (= 1&sfracdenom;1000&sfracend; of a meter).
milli-,
- Weights and Measuresa combining form meaning "thousand'' (millipede): in the metric system, used in the names of units equal to one thousandth of the given base unit (millimeter).
- Latin, combining form of mille thousand
- French
Collins Concise English Dictionary © HarperCollins Publishers::
milli- prefix
'milli-' also found in these entries (note: many are not synonyms or translations):
m
- thousandth
- metric system
- mille-feuille
- milliampere
- milliard
- milliary
- millibar
- millibarn
- millicurie
- millidegree
- milliequivalent
- millier
- millifarad
- milligal
- milligram
- millihenry
- millilambert
- milliliter
- millilux
- millimeter
- millimicron
- millimole
- millipede
- milliradian
- millirem
- milliroentgen
- millisecond
- millivolt
- milliwatt
- milreis