㷻
1. Same as "无".
(同“無”。)
"㷻" is pronounced the same as "无" and has the same meaning.
(《字补·火部》：“㷻，音無，義同無”)
2. In modern physics, refers to energy that cannot be transformed or utilized, in contrast to "㶲" which can be converted and used.
(在现代物理学中，指能够不转化和利用的能量，与能转化和利用的【㶲】相对立)