thio-

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thio-

(word root) sulfur
Examples of words with the root thio-: thioaldehyde
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

thio-

or thi-
pref.
Containing sulfur, used especially of a compound in which oxygen has been replaced by a divalent sulfur: thiourea.

[Greek theio-, from theion, sulfur.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

thio-

or before a vowel

thi-

combining form
(Elements & Compounds) indicating that a chemical compound contains sulphur, esp denoting that a compound is derived from a specified compound by the replacement of an oxygen atom with a sulphur atom: thiol; thiosulphate.
[from Greek theion sulphur]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

thio-

a combining form meaning “sulfur” (thiobacillus), used esp. in the names of chemical compounds in which part or all of the oxygen atoms have been replaced by sulfur (thiosulfuric acid).
Also, esp. before a vowel,thi-.
[comb. form representing Greek theîon]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
(1.) Patel EU, Thio CL, Boon D, Thomas DL, Tobian AAR.
The brand ambassadors present include "Keeper of the Quaich" and Glenmorangie's Murphy Chang, Hendricks' Charmaine Ann Thio, Balvenie's Neil Strachan, Chivas' Hamish Houliston, Macallan's Keith Nair, Beam Suntory's Jamey Merkel, and Pernod Richard's Fintan Cannon.
Terence and his co-Founding Partner, Kelvin Thio, each have more than 20 years of experience, in corporate restructuring, business reviews, due diligence and acquisition deals, as well as insolvency and forensic accounting assignments.
The government's Central Committee for Reviewing Confiscated Farmlands and Other Lands, chaired by Vice President Henry Van Thio, said in December that 9,922 out of 12,442 complaints remain pending.
His other works are Mao Zedong (biography, 1972), Ho Chi Monh ji atam kahani (biography, 1972), Jeki Bengal saan thio (politics, 1973), Subh theendo (politics, 1974), and Inqalab jid wa jahad mein adab jo hiso (political history, 1974).
Ramos Jr., Elwood Perez, Edwin Uy, Karen Ibasco, Luis Manzano, Senator Manny Pacquiao, Melanie Marquez, Ricci Ang, Sanya Lopez, Sheree Sunshine Cruz, and William Thio.
According to an announcement by the President's Office, the cabinet was reformed with Win Myint as President and Myint Swe and Henry Van Thio as the two Vice Presidents.
The two runners up, military nominee Myint Swe and ethnic minority Chin candidate Henry Van Thio, will become first and second vice-presidents respectively.