Sorry, not the plural: the feminine. On Tue, Nov 29, 2011 at 8:26 AM, Dan'l Danehy-Oakes <danldo at gmail.com> wrote: > Gerry Quinn wrote: >> For me, ‘prime calculator’ is the obvious interpretation – ‘calcula’ isn’t >> even a word, really. > > Actually, it's the plural of "calculus," meaning "little stone." > > -- > Dan'l Danehy-Oakes -- Dan'l Danehy-Oakes