Wiktionary英语词典
收录 1,329,381 个英语单词，来自Wiktionary的英文释义、IPA发音、词源、词形变化和词汇关系数据
O开头单词
(共36,133个)
A five-membered saturated heterocycle having a three carbon atoms, one oxygen atom and one sulfur at...
plural of oxathiolane
An unsaturated five-membered heterocycle having three carbon atoms, one oxygen atom, one sulfur atom...
plural of oxathiole
A saturated heterocycle that has three carbon atoms, one sulfur and one oxygen atom
plural of oxathiolidine
A particular antihistamine drug derived from piperazine.
Any five-membered heterocycle having one carbon atom, three nitrogen atoms, one oxygen atom, and two...
plural of oxatriazole
Any tricyclic heterocycle containing oxygen as a heteroatom
plural of oxatricycle
Relating to an oxatricycle
Used to name compounds in which two carbon atoms have been replaced by one of oxygen and one of nitr...
oxazaborolidine
plural of oxazaborolane
Any of a class of five-membered, saturated heterocycles containing two carbon atoms, a nitrogen, bor...
plural of oxazaborolidine
A saturated five-membered heterocycle having two carbon atoms, and one each of oxygen, nitrogen and ...
plural of oxazaphospholidine
Any saturated six-membered heterocycle containing three carbon atoms and one each of oxygen, nitroge...