irradiancein
Irradiancein is a hypothetical unit of measurement that has not been formally defined or adopted in any recognized scientific or engineering standards. The term "irradiance" itself refers to the power of electromagnetic radiation per unit area. It is typically measured in watts per square meter (W/m²). The addition of "in" to this term suggests a possible, but unsubstantiated, attempt to create a distinct unit.
If "irradiancein" were to be a valid unit, its definition would likely depend on the specific context
The lack of recognition for "irradiancein" in standard radiometric or photometric systems indicates that it is