thi
thi — combining form
1. A prefix in chemical names meaning that a sulfur atom has taken the place of an
A prefix in chemical names meaning that a sulfur atom has taken the place of an oxygen atom or another element in a compound — for example, thiosulfate is a sulfur-containing version of sulfate, and thiamine is a vitamin with a sulfur-linked ring structure.
Ishaan added sodium thiosulfate to the solution in the lab.
thiosulfate — sulfur-containing version of sulfate
The doctor prescribed thiamine supplements for the patient with low vitamin B1 levels.
thiamine — vitamin with sulfur in its structure
Rania studied how thiol groups help form strong bonds in protein molecules.
Minho tested the sample and found traces of thiocyanate in the drinking water.
Thiopental was once widely used as an anesthetic before surgery.
- thio-
Alternative form used before vowels; thi- and thio- are interchangeable depending on the following letter
- oxy-
Indicates oxygen, which thi- replaces in the compound; oxy- denotes oxygen-containing, thi- denotes sulfur-containing
文法句型
thi- + noun (forming compound terms)
用法筆記
Only appears at the beginning of technical chemistry terms. The alternative form thio- is used before vowels (e.g. thioether, thioester). Not used in everyday English outside scientific writing.