Definition of zetta- in English:

zetta-

Syllabification: zetta-

combining form

  • (Used in units of measurement) denoting a factor of 1021: zettahertz

Origin

apparently adapted from Italian sette 'seven' (see also zepto-).

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space