mega-

prefix

Etymology: Etymology tree Proto-Indo-European *méǵh₂s Proto-Hellenic *mégas Ancient Greek μέγᾰς (mégăs)der. English mega- From Ancient Greek μέγας (mégas, “great, large, mighty”), from Proto-Indo-European *meǵh₂s (“great”). Cognate with Latin magnus, Sanskrit मह (maha, “great, massive, large-scale, epic”), and with Germanic words: Gothic 𐌼𐌹𐌺𐌹𐌻𐍃 (mikils), Old English micel, Middle English muchel, English much, Old High German mihhil, Old Norse mikill, Danish meget.

1. Very large, great.
2. In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by one million (10⁶).

   “Near-synonyms: million, M”

3. Multiplying the unit to which it is attached by 2²⁰ (= 1,048,576, the binary number closest to a million). Computing symbol: Mi.
4. Multiplying the unit to which it is attached by 2¹⁰ × 10³ (= 1,024,000, the binary round number closest to a million).
5. Really, very, uber-, super-.

   “What?! I'm not sure if I scream that out loud or if my inner voice bounces off the insides of my skull. Why is Archie once again meandering over to Team Nadine? Sounds like I'm not the only one who's mega-confused.”