noun, noun which may take the genitive case particle 'no'
invisibility; invisible
Technical or formal term for the state of being invisible or not visible. Often used in scientific, philosophical, or technical contexts.
不可視の光線には紫外線や赤外線がある。
Invisible light includes ultraviolet and infrared rays.
This substance exists in an invisible state.
見えない is the everyday word for 'cannot be seen', while 不可視 is a formal, technical term.
可視 means 'visible, able to be seen' while 不可視 means 'invisible, not able to be seen', the direct technical opposite.
Compound of 不 (not) + 可 (possible) + 視 (see), literally 'not possible to see'. A Sino-Japanese term used in technical and formal contexts.