/ Dictionary / Index D Diodorus Siculus: Meaning and Definition of Find definitions for: Di•o•do•rus Sic•u•lus Pronunciation: (dī"ō-dôr'us sik'yu-lus, -dōr'-), [key] late 1st century b.c., Greek historian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diode dioecious Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language