/ Dictionary / Index S sino-: Meaning and Definition of Find definitions for: sino- Pronunciation: [key] a combining form representingin compound words: sinorespiratory. Sino- Pronunciation: [key] a combining form meaning “Chinese”: Sino-Tibetan; Sinology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sinningia sinoatrial node Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language