rubro

Forms

rubro (feminine rubra, masculine plural rubri, feminine plural rubre)^[1]

Etymology

It is a learned word: it is borrowed from Latin ruber (“red”).^{[2][3][4][5][1]} The inherited Italian colour word, rosso, comes from the related Latin russus.^[6]

Latin ruber goes back to Proto-Italic *ruðros and Proto-Indo-European *h₁rudʰrós (“red”), from the root Proto-Indo-European *h₁rewdʰ-.^[1][6] It is cognate with Ancient Greek ἐρυθρός (eruthrós, “red”) and Umbrian rufru.^[6][7][4]

Earliest recorded meaning

The first record is in Dante's Paradiso, before 1321: Con costui corse infino al lito rubro, “with him it ran as far as the red shore”, the coast of the Red Sea.^[5][3][8]

Semantic evolution

Old Italian Bible translations speak of lo mare rubro, the Red Sea, and Annibal Caro has l'onde rubre.^[3][9] Later poets use it for the deep red of blood and coral.^[3] The adjective has remained a rare literary Latinism for rosso.^[8][2][10] In anatomy rubro- and -rubro form compounds that refer to the red nucleus of the brain, such as fibre rubrospinali.^[8]

Timeline

• Before 1321 – Dante's lito rubro in the Paradiso.^[5][3]

Meanings

Adjective

1. (literary, archaic) red, bright red: il mare rubro, the Red Sea.^{[5][10][11][3]}

Related words

• rosso
• rufo
• rovo
• Latin ruber

Usage notes

An old noun rubro “bramble, bramble thicket”, from Latin rubus, was used for the burning bush of Moses;^[12][9] Tommaseo suspected it was an error.^[12][9] GRADIT records the medical phrase miliaria rubra.^[5]

References

1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
3. ^ a b c d e f Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
4. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975)
5. ^ a b c d e De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
6. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
7. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
8. ^ a b c Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
9. ^ a b c Tommaseo, Niccolò; Bellini, Bernardo (1861–1879), Dizionario della lingua italiana, 4 vols., Torino: UTET
10. ^ a b Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
11. ^ Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
12. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 3293