thio

¹ American  

[thahy-oh] / ˈθaɪ oʊ /

adjective

Chemistry.

1. containing sulfur, especially in place of oxygen.

---

thio- ² American  

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“sulfur,” used in chemical nomenclature in the names of compounds in which part or all of the oxygen atoms have been replaced by sulfur; often used to designate sulfur analogues of oxygen compounds.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

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

   thiol

   thiosulphate

---

thio– Scientific  

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 A prefix that means “containing sulfur,” used especially of a compound in which an oxygen atom has been replaced by a sulfur atom, as in thiourea.

---

Etymology

Origin of thio¹

Independent use of thio-

Origin of thio-²

Combining form representing Greek theîon