prefix ·Rare ·Advanced level

Definitions

Prefix

1. 1
   In the International System of Units and other metric systems of units, one-thousandth of the unit to which it is prefixed; that is, multiplying the unit to which it is attached by 10⁻³. Symbol: m. morpheme

   "Example: milligram"

2. 2
   thousand morpheme

   "Example: millipede"

Synonyms

All synonyms

chilia

Antonyms

All antonyms

kilo

Etymology

From Latin mille (“thousand”), via French.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.