Definition of tera- in English:

tera-

combining form

  • 1Used in units of measurement.

    1. 1.1Denoting a factor of 10¹².
      ‘terawatt’
    2. 1.2Computing
      Denoting a factor of 2⁴⁰

Origin

From Greek teras monster.

Pronunciation:

tera-

/ˈterə/