miscellaneum

Etymology
Perhaps by back-formation from, in accordance with the →  rule of plural formation of neuter nouns in the nominative case from the Latin second declension.

Noun

 * 1)  A miscellany.
 * 2) * 1652: Samuel Hartlib, Cornu Copia : A Miscellaneum of lucriferous and most fructiferous Experiments, Observations, and Discoveries, immethodically distributed ; to be really demonstrated and communicated in all Sincerity., book title (Harleian Miscellany, volume VI, pages 27–36)
 * Cornu Copia : A Miscellaneum of lucriferous and most fructiferous Experiments, Observations, and Discoveries, immethodically distributed ; to be really demonstrated and communicated in all Sincerity.
 * 1) * 1999: Housman Society, Housman Society Journal, page 87 (Turner & Devereux)
 * Aside from those cited in this miscellaneum, other copies are to be seen at Bryn Mawr (inscribed by Kennerley to R. W. Ellis); Southern Illinois University, Carbondale; and private collection 1.
 * Aside from those cited in this miscellaneum, other copies are to be seen at Bryn Mawr (inscribed by Kennerley to R. W. Ellis); Southern Illinois University, Carbondale; and private collection 1.

Usage notes

 * is almost universally treated as a plurale tantum in English, consequently, the singular form is liable to cause confusion:
 * As means, in the usual sense, “a miscellaneous collection of different things”, a single  is logically impossible because variety and diversity (in their usual senses) are attributes of groups of things, not of individual things; for example, a populace can be varied and diverse, but a person cannot be various or diverse.
 * will usually be taken to mean “a single miscellany”, not several assortments.
 * In common usage, is over seven hundred times more common than, whereas  is around six hundred times more common than ; in re plural forms, the Anglicised  is well over a hundred thousand times rarer than  and over eighteen thousand times rarer than.