a combining form representing sinus in compound words: sinorespiratory.
a combining form meaning “Chinese”: Sino-Tibetan; Sinology.
Origin of Sino-
< New Latin, combining form representing Late Latin Sīnae the Chinese < Late Greek Sînai ≪ Chinese Qìn Ch'in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin for Sino-
from French, from Late Latin Sīnae the Chinese, from Late Greek Sinai, from Arabic Sīn China, probably from Chinese Ch'in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
before vowels Sin-, word-forming element meaning "Chinese," 1879, from Late Latin Sinæ (plural) "the Chinese," from Ptolemaic Greek Sinai, from Arabic Sin "China," probably from Chinese Ch'in, name of the fourth dynasty of China (see China).
Online Etymology Dictionary, © 2010 Douglas Harper