Word.ws English Dictionary

tera-

US/ˈtɛ.ɹə/

tera- prefix: in the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10¹² (short scale trillion or long scale billion).

Prefix

tera-

  1. In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10¹² (short scale trillion or long scale billion).
    • Near-synonym: T
    • a 2-terawatt increase
    Antonyms:
    pico-
  2. (proscribed, but still in common use) tebi- (2⁴⁰ = 1024⁴).
    • a 2-terabyte hard drive

tera- meaning in Tamil and Vietnamese

tera- in Tamil

தெரா

tera- in Vietnamese

SI prefix
tê-ra

Antonyms of tera-

Origin of tera-

From Ancient Greek τέρας (téras, “monster”). Also from Ancient Greek τέτταρες (téttares, “four”), by analogy with tetra- for being the fourth power of 10³. Doublet of terato-.

Words formed from tera-

Questions about tera-

What does tera- mean?
Tera- means in the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10¹² (short scale trillion or long scale billion).
What is tera- in Tamil?
Tera- in Tamil is தெரா. See Tera- meaning in Tamil.
What part of speech is tera-?
Tera- is a prefix.
How do you pronounce tera-?
Tera- is pronounced /ˈtɛ.ɹə/ (US).

Words near tera- in the dictionary

  1. ter-tenant
  2. ter-tenants
  3. Tera
  4. tera amp
  5. tera amps
  6. tera-
  7. tera-amp
  8. tera-amps
  9. tera-becquerel
  10. tera-joule
  11. tera-joules

Source and license

Adapted from Wiktionary: tera- (page history and authors); tera- (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-tera-.wav.

Cite this entry: “tera-.” Word.ws, https://word.ws/tera-. Based on Wiktionary, CC BY-SA 4.0.