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⇱ meg- - WordReference.com Dictionary of English



WordReference Random House Learner's Dictionary of American English © 2026
mega-, prefix. 
  1. mega- comes from Greek, where it has the meaning:
    • extremely large, huge:megalith (= extremely large stone or rock); megastructure (= a huge structure).
    • mega- is also used to mean one million of the units of (the base root or word):megahertz (= one million hertz); megaton (= one million tons).
    • mega- also means very large quantities or amounts:megabucks (= a great deal of money); megadose (= a large dose of medicine).
    • mega- also means things that are extraordinary examples of their kind:megahit (= a smash movie or stage hit); megatrend (= important, very popular trend).

WordReference Random House Unabridged Dictionary of American English © 2026
mega-, 
  1. var. of megalo- (megalith);
    also the initial element in units of measure that are equal to one million of the units denoted by the base word (megahertz). Symbol: M 
Also,[esp. before a vowel,] meg-. 
  • combining form representing Greek mégas large, great

'meg-' also found in these entries (note: many are not synonyms or translations):

🗣️Forum discussions with the word(s) "meg-" in the title:


Look up "meg-" at Merriam-Webster
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