What is "write once"

a. (context computing English) of a type of storage technology in which data, once written, cannot be erased or modified

Write once may refer to:

• Write once, run anywhere, a slogan for the cross-platform benefits of Java
• Write once, compile anywhere, a slogan for the cross-platform benefits of C
• Write-once (cache coherency), a write-invalidate protocol in computer memory design
• Write Once Read Many, computer storage that can be written to once, but read from multiple times