Definitions for DECI-

This page provides all possible meanings and translations of the word DECI-

Random House Webster's College Dictionary


  1. a combining form used initially in the names of units of measurement that are one tenth the size of the unit denoted by the second element of the compound:

    decibel; deciliter.

    Category: Weights and Measures, Affix

Origin of deci-:

L decimus tenth


  1. deci-(Prefix)

    Meaning a tenth part.

  2. deci-(Prefix)

    In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10. Symbol: d

  3. Origin: From decimus, tenth


  1. Deci-

    Deci is a prefix in the metric system denoting a factor of one tenth. Adopted in 1795, the prefix comes from the Latin decimus, meaning tenth. Its most frequent use is in the non-SI unit, the decibel, used to measure sound intensity and many other ratios.


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