Question

0030 凹 ㄠ concave, indented or depressed, sunken

Accepted Answer

concave 凹 āo 凹的字源http://zhongwen.com/cgi-bin/zipux2.cgi?b5=%A5W・凹的筆順http://stroke-order.learningweb.moe.edu.tw/word_detail.jsp?big5=A557・凹在n词酷http://www.nciku.com/search/zh/%E5%87%B9・凹在RTK：concavehttp://kanji.koohii.com/study/?framenum=33

Heisig number	0030
Keyword	concave
Traditional	凹
Simplified	凹
Zhuyin	ㄠ
Pinyin	āo
Connotation	concave, indented or depressed, sunken
References	凹的字源 http://zhongwen.com/cgi-bin/zipux2.cgi?b5=%A5W ・凹的筆順 http://stroke-order.learningweb.moe.edu.tw/word_detail.jsp?big5=A557 ・凹在n词酷 http://www.nciku.com/search/zh/%E5%87%B9 ・凹在RTK：concave http://kanji.koohii.com/study/?framenum=33

凹 Concave ㄠ āo Indented Depressed Sunken