primus

Primus (PREE-mus, "the first") is one of the great load-bearing words of Latin: the record holds 13,451 occurrences across 371 works. It lives everywhere prose is written, and its heaviest concentrations are historical and technical: Livy's Ab urbe condita ("From the founding of the city") leads with 1,674, then Pliny's Naturalis Historia ("Natural History") at 904 and Quintilian's Institutio Oratoria ("The Orator's Education") at 414. Poetry follows well behind — the Aeneid has 255 — with Cicero's Epistulae ad Familiares ("Letters to Friends") at 253 and Celsus's De Medicina ("On Medicine") at 242. This is a word the historian and the encyclopedist reach for constantly: to order events, rank things, mark what came before all the rest.

Lewis & Short (A Latin Dictionary, 1879) glosses it plainly as "the first," and preserves a precise grammatical scruple: primus is "properly only when three or more are referred to" — the superlative "first of many," as against prior, the "first of two." The first, that is, only where there is a field to be first in.

The dictionary also carries the only ancestry the record preserves. No etymology pointer is matched here — the honest gap. But Lewis & Short's own note files primus under an obsolete preposition pri (also written prei), derives prior and priscus from it, compares privus and privo, and points onward to pro. The note supplies no meaning for any of these related forms; it simply groups the family and leaves their senses unspoken.

The cited surfaces are all Livy, and all case-forms of the ordering work the word does — primae, primum, primo, primam — "first" declined through the opening books of Rome's history, marking one thing after another as the first of its kind.

If primus needs three or more before it can mean anything, does "first" name a thing, or only a place in a line?