.. _glossary-q:
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Memory Management Glossary: Q
=============================
.. include:: alphabet.txt
.. glossary::
quadword
A *quadword* is a unit of memory consisting of four adjacent
:term:`words`.
.. historical::
In Digital's Alpha architecture, a quadword of 64 bits was
actually the natural word size, but the term *word* was
still used for the 16-bit unit, for compatibility with the
PDP-11.
.. seealso:: :term:`doubleword`.