What 鍀 means
It names technetium in modern Chinese chemistry.
The Ministry of Education says 鍀 is absent from Shuowen; as of 2026, no reliable premodern attestation of this glyph appears in checked sources.
Technetium, symbol Tc, was produced in 1937, named internationally in 1947, and given its Chinese designation in 1991. The 金 component marks a solid metal.
Why do I see 鎝 or 锝?
They name the same element in different regional systems.
鍀 is dé; simplified text uses 锝. Taiwan uses 鎝, read tǎ. 鎝 also has an older sà sense, "engrave," not applicable here.
Technical and regional; it signals a chemistry context.
Treat it as a regional spelling, not a different element.
Don't confuse it with
2Combination ideas
1Questions people ask
1Why does 鍀 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 鍀
鍀\9340Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.