something, especially a liquid or gas, that flows out of somebody/something; the act of flowing out (Oxford)
2.the expression of feelings in an exaggerated way; feelings that are expressed in this way (Cambridge)
All light bulbs are capable of effusion.
Some flowers have very potent effusion.
He showed an effusion of anger and despair. (Cambridge)
capable of effusion
very potent effusion
Discharge
Emission
Inhibition
Assimilation
Effusive
Effusively