vanishing (n.)

• blackout
• blocking
• departure
• disappearance
• disappearing
• dispersion
• dissipation
• dissolution
• dissolving
• eclipse
• elimination
• erasure
• evanescence
• evaporation
• extinction
• fadeout
• fading
• flying
• fugitive
• going
• melting
• occultation
• passing
• transient
• wipe