pars

Pars (pahrss, "a part, portion, share") is among the most ubiquitous nouns in the Latin corpus: 12,489 occurrences spread across 339 works. That is a word woven through nearly the whole record, and its heaviest concentrations are telling. It lives most in Livy's Ab urbe condita ("From the Founding of the City," 1,340), then in the technical and encyclopedic prose that measures and divides the world — Naturalis Historia ("Natural History," 819), De Medicina ("On Medicine," 633), Institutio Oratoria ("Training of an Orator," 569), De Architectura ("On Architecture," 441), and Res Rustica, Books I–IX ("On Farming," 364). History narrates factions and shares; medicine, architecture, and agriculture name the parts of bodies, buildings, and fields. The word is a tool for anyone who counts, apportions, or takes sides.

The one lexicon in the record, Lewis & Short (A Latin Dictionary, 1879), glosses pars with plain economy: "a part." Its entry preserves the noun's archaic and irregular forms — the old genitive partus ("of a part") from an inscription (Corpus Inscriptionum Latinarum 197), the adverbial accusative partim ("in part," "some") cited from Cicero and Livy. These leftover cases show a word old enough to have shed forms as the language moved.

For ancestry the record matches one etymology pointer: pars is "treated in Ernout-Meillet, Dictionnaire étymologique de la langue latine (DELL, 1932; 4th ed. 1959), s.v. pars" (entry #8297). The pointer marks where the derivation is discussed but supplies no reconstructed root here, so none is imported that the record does not carry.

The citable passages are all Livy — pars, partem, parte recurring through the first book of Ab urbe condita (e.g. Ab Urbe Condita, book 1, p15 and p23), the historian's endless division of Rome into its contending parts.

If a word is everywhere, does it name a thing — or only the act of dividing?