memory

Data storage in the form of chips, or the actual chips used to hold data; storage is used to describe memory that exists on tapes or discs. See RAM and ROM.

The ability of antigen-specific T or B cells to"recall" prior exposure to an antigen and respond quickly without the need to be activated again by CD4 helper T cells.

This always means your main memory, not your disk. Clouding the issue is the fact that your machine may implement "virtual" memory; that is, it will pretend that it has more memory than it really does, and it'll use disk space to hold inactive bits. This can make it seem like you have a little more memory than you really do, but it's not a substitute for real memory. The best thing that can be said about virtual memory is that it lets your performance degrade gradually rather than suddenly when you run out of real memory. But your program can die when you run out of virtual memory too, if you haven't thrashed your disk to death first.

In a computer, the internal storage available for processing data and executing instructions upon it The chips where computers store system software, programs, and data currently in use

All of the addressable storage space in a processing unit and other internal memory that is used to execute instructions. 2. Loosely, the volatile, main storage in computers. See random access memory.