Read-mostly memory
Read-mostly memory is a type of memory that can be read fast, but written to only slowly.
Historically, the term was used to refer to different types of memory over time:
In 1970, it was used by Intel and Energy Conversion Devices to refer to a new type of amorphous and crystalline nonvolatile and reprogrammable semiconductor memory. However, it was also used to refer to reprogrammable memory and magnetic-core memory.
The term has mostly fallen into disuse, but is sometimes used referring to electrically erasable programmable read-only or flash memory today.