thio

¹

[ thahy-oh ]

adjective

, Chemistry.

1. containing sulfur, especially in place of oxygen.

thio-

²

1. a combining form meaning “sulfur,” used in chemical nomenclature in the names of compounds in which part or all of the oxygen atoms have been replaced by sulfur; often used to designate sulfur analogues of oxygen compounds.

thio-

combining_form

1. 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

   thiosulphate

   thiol

thio–

1. A prefix that means “containing sulfur,” used especially of a compound in which an oxygen atom has been replaced by a sulfur atom, as in thiourea.

Word History and Origins

Origin of thio¹

Independent use of thio-

Origin of thio²

Combining form representing Greek theîon

Word History and Origins

Origin of thio¹

from Greek theion sulphur

Example Sentences

We may also notice that thio-ethers combine with alkyl iodides to form sulphine or sulphonium compounds, R3SI.

From Project Gutenberg

Alum does not agree with the thio dyestuffs which are manufactured by Dahl & Co., Barmin, and are fast against soap and light.

From Project Gutenberg

The sulpho-acid of the thio-base is a yellow dye, which was named by its discoverer “primuline.”

From Project Gutenberg