antilogarithm

noun

Etymology: Etymology tree Proto-Indo-European *h₂ent- Proto-Indo-European *-s Proto-Indo-European *h₂énts Proto-Indo-European *-i Proto-Indo-European *h₂énti Ancient Greek ᾰ̓ντῐ́ (ăntĭ́) Ancient Greek ἀντι- (anti-)der. English anti- English logarithm English antilogarithm From anti- + logarithm.

1. The number of which a given number is the logarithm (to a given base).

   “If x is the logarithm of y, then y is the antilogarithm of x.”