ā
(used in transliterating chemical names)
吖丁啶
ā dīng dìng
azetidine (chemistry) (loanword)
吖啶
ā dìng
acridine (antiseptic and disinfectant)
吖嗪
ā qín
-azine
氨吖啶
ān ā dìng
aminoacridine or aminacrine (antiseptic and disinfectant)