The prefix thio-, when applied to a chemical, such as an ion, means that an oxygen atom in the compound has been replaced by a sulfur atom. This term is often used in organic chemistry.

THIO- definition: 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meaning “sulfur,” used in chemical nomenclature in the names of compounds in which part or all of the oxygen atoms have been replaced by sulfur; often …

Definition of 'thio-' thio- in British English or before a vowel thi- combining form indicating that a chemical compound contains sulphur, esp denoting that a compound is derived from a …

thio-, comb. form meanings, etymology, pronunciation and more in the Oxford English Dictionary

The meaning of THI- is containing sulfur. How to use thi- in a sentence.

Thio- definition: Containing sulfur, used especially of a compound in which oxygen has been replaced by a divalent sulfur.

Sep 22, 2025 · Chalcogen analogues of monocarboxylic acids with retained names may also be named by placing the prefix ‘thio’, ‘seleno’, or ‘telluro’ in front of the name of the acid.

The prefix "thio" in the name of a polyatomic ion means that an oxygen atom in the root "ate" ion has been replaced by a sulfur atom. For example, the sulfate ion is SCfi2-, while the …

The prefix thio-, when applied to a chemical, such as an ion, means that an oxygen atom in the compound has been replaced by a sulfur atom. This meaning is especially valid in organic …

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 in the names of chemical compounds in which part or all of the oxygen atoms have been replaced by sulfur (thiosulfuric …