<span class="searchmatch">retrogration</span> (usually uncountable, plural <span class="searchmatch">retrogrations</span>) retrogradation interrogator...
<span class="searchmatch">retrogrations</span> plural of <span class="searchmatch">retrogration</span>...
who interrogates, a questioner Interrogation on Wikipedia.Wikipedia <span class="searchmatch">retrogration</span> From interrogō (“inquire, interrogate; argue”) + -tor. (Classical Latin)...