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Desideratum is a desired feature. Which form is right?

Google search shows that "set of desiderata" is more common. But is it correct?

e.g., a sentence

In this paper, a set of desiderate for memory systems of companions will be presented, together with case studies of the memory subsystems of two existing


We formulate a set of desirable characteristics, or “desiderata” for a generic IDR.

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Since most people will assume that Desiderata is a reference to the 1927 "poem" by Max Ehrmann, I wonder if that is a wise choice in any form. What is wrong with desired features or even requested features where the form of the plural is well-understood. – Fortiter Mar 14 '13 at 1:14
it became a technical term in my academic field. So to trigger the analogy in reader's minds, use of this term is preferred. – userJT Mar 14 '13 at 16:31

That’s wrong. This sort of singular -um forms a plural in -a.

Your cited paper paper was misunderstanding it to be, I dunno, maybe Italian not Latin, like more than one donna being several donne.

That does not apply here. And neither does having more than one antenna give you several antennae.

It is just desideratum in the singular, desiderata in the plural.

But given the datum/data controversy, not to mention bacterium/bacteria and criterion/criteria, all this is treading on mighty thin ice indeed.

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