Definition of yocto- in English:

yocto-

Syllabification: yocto-

combining form

  • (Used in units of measurement) denoting a factor of 10−24: yoctojoule

Origin

adapted from octo-, on the pattern of combining forms such as peta- and exa-.

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody