Some operas, a blessing that could disappear?

• Can be wiped off in time with artist's brush
• Like chalk on a chalkboard
• Not fixed, in a way
• Unlocked, as a computer file
• Like slates and hard drives
• Like whiteboards
• Like whiteboards and blackboards

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Erasable \E*ras"a*ble\, a. Capable of being erased.

WordNet Word definitions in WordNet
adj. capable of being effaced; "the fire's worst scars were effaceable by a comprehensive program of reforestation"; "a signal too loud to be erasable in a single pass through the erase head" [syn: effaceable ]

Wiktionary Word definitions in Wiktionary
a. Capable of being erased