Wordnet 3.0
NOUN (1)
1. 
 (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; 
 now superseded by semiconductor memories; 
- Example: "each core has three wires passing through it, providing the means to select and detect the contents of each bit"[syn: core, magnetic core]
WordNet (r) 3.0 (2006):
magnetic core
    n 1: (computer science) a tiny ferrite toroid formerly used in a
         random access memory to store one bit of data; now
         superseded by semiconductor memories; "each core has three
         wires passing through it, providing the means to select and
         detect the contents of each bit" [syn: core, magnetic
         core]