magnus

Magnus (MAHG-nooss, “great, large”) is among the most thoroughly attested words in the Latin record: 22,890 occurrences spread across 366 works. This is not a word with a habitat — it lives everywhere Latin is written. The heaviest concentrations fall in Livy's Ab urbe condita (“From the Founding of the City,” 2,068), Pliny's Naturalis Historia (“Natural History,” 1,644), Cicero's Epistulae ad Familiares (“Letters to Friends,” 668), Quintilian's Institutio Oratoria (“The Orator's Education,” 546), Seneca's Ad Lucilium Epistulae Morales (“Moral Letters to Lucilius,” 527), and Celsus's De Medicina (“On Medicine,” 455). History, natural science, rhetoric, philosophy, medicine: the word measures magnitude across every register.

The lexica treat the sense as plain. Lewis & Short (A Latin Dictionary, 1879) glosses it simply “great, large,” recording the adjective with its irregular grades — comparative maior (“greater”), superlative maximus (“greatest”) — and preserving an archaic genitive magnai (in magnai reipublicai gratia, “for the sake of the great commonwealth,” cited from Plautus). A second Lewis & Short entry notes Magnus as a Roman surname, “e. g. Cn. Pompeius Magnus” — Pompey the Great. Walde–Hofmann (Lateinisches etymologisches Wörterbuch, 1938–54) glosses it „groß“ (“great”), adds the temporal senses „lang, alt“ (“long, old”) and the tones „laut; vornehm“ (“loud; distinguished”), and notes that in later Latin magnus was largely displaced by grandis (“large, grand”) except in fixed uses.

For ancestry the record matches one pointer: Walde–Hofmann treats magnus s.v. (pp. 916–918, entry #1656), listing the root candidates *magesino-, *mengh-, and *myra- — recorded, but with confidence marked unavailable, so the deep history stays open.

The cited surfaces are all Livy — magna (“great,” feminine singular), magnas (“great,” accusative plural), magnumque (“and great”), and the superlatives maxime (“most greatly”) and maximum (“greatest”) recurring through the opening book of the Ab urbe condita (Livy, Ab Urbe Condita, books 1–2).

When a word means “great” in every kind of book, is it describing the world, or the writer's wish to enlarge it?