Computer memory unit (4)
I believe the answer is:
byte
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">computer memory unit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(byte is a kind of computer memory unit)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for byte that I've seen before include "Unit of (usually eight) bits" , "Unit of data storage in computer" , "Computer's unit of stored memory" , "Unit of memory storage in computer" , "Several bits of information" .)