Definition of tera- in US English:

tera-

combining form

  • 1(in units of measurement) denoting a factor of 10¹².

    ‘terawatt’
  • 2Computing
    Denoting a factor of 2⁴⁰.

Origin

From Greek teras ‘monster’.

Pronunciation

tera-

/ˈtɛrə//ˈterə/