A language indicates the plurality of a noun by means of complete reduplication.  For instance, in Indonesian, the singular <i>rumah</i> 'house' becomes the plural <i>rumah-rumah</i> 'houses.'  In order to qualify as complete reduplication, the entire noun stem must be repeated; the reduplication of  a partial segment is considered a type of affixation.

<br><br><b>Reference</b><br>
Dryer, Matthew S.. 2008. Coding of Nominal Plurality.
In Haspelmath et al (2008), chapter 33. Available online at <a href="http://wals.info/feature/33">
http://wals.info/feature/33</a href>.
