/ Dictionary / Index A arrhenotoky: Meaning and Definition of Find definitions for: ar•rhe•not•o•ky Pronunciation: (ar"u-not'u-kē), [key] — n. parthenogenesis in which only males are produced. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Arrhenius arrhythmia Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language