<span class="searchmatch">𠕄</span> (Kangxi radical 13, 冂+3, 5 strokes, composition 凹 or ⿵冂⿰⿱丨一㇅) 𫩦 Kangxi Dictionary: page 129, character 5 Hanyu Da Zidian (first edition): volume 1...
Indicates that one CJK ideograph is formed by rotating another one by 180 degrees. 凹 = <span class="searchmatch">𠕄</span> 予 = 𠄔 Rotated characters in the Unihan database...
← <span class="searchmatch">𠕄</span> [U+20544] CJK Unified Ideographs Extension B 𠕆 → [U+20546]...
← 𠕂 [U+20542] CJK Unified Ideographs Extension B <span class="searchmatch">𠕄</span> → [U+20544]...