/ Dictionary / Index S Siem Reap: Meaning and Definition of Find definitions for: Si•em Re•ap Pronunciation: (sē'um rē'up, syem' ryap'), [key] a city in NW Cambodia, near Angkor. ab. 10,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. siemens Siena Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language