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Etymology and origin of the Italian word piano

piano1 flat; slowly; floor

Confidence
Established
Formation
Inherited
First attested
end of the 12th century, Tuscan document
Inherited from
Latin planus
Ultimate origin
Proto-Indo-European *pl(e)h₂-nó-
Etymology tree of piano1
inherited borrowed derived
Latin planus
Italian piano
Derived words · piano1
Latin complano ← planus
Latin plane ← planus
Latin planities ← planus

Pronunciation

Forms

piano (feminine piana, masculine plural piani, feminine plural piane, superlative pianissimo)[1] As a noun “floor; plane; plain” it has the plural piani, in Old Italian also le pianora.[1][2][3]

Etymology

The word meaning “flat; slowly; floor” is inherited from Latin plānus (“flat, level; easy, clear”), with the noun plānum (“level ground, plain”), its neuter used as a noun.[4][5][6][1] The adjective is found across the Romance languages except Romanian: French plain, Occitan pla, Catalan pla, Spanish llano and Portuguese chão.[5][7][8] Wiktionary compares Sicilian chianu.[1]

De Vaan derives the Latin word from Proto-Italic *plāno-, Proto-Indo-European *pl(e)h₂-nó- (“flattened”), and compares Lithuanian plónas (“thin”) and Latvian plāns (“flat, thin”).[9] Nocentini adds that another form of the root lies behind German Flur and English floor.[5]

The noun for the instrument is a clipping of pianoforte, named because it could play both soft and loud, and the short form probably reached Italian through French, where it is recorded from 1798.[4][5]

Earliest recorded meaning

DELI's earliest record is the noun “stretch of plain” in a Tuscan document on an exchange of land from the end of the 12th century.[4][6] The adjective “flat, level” is first in King Enzo, before 1272: Vanne in Puglia piana “go to flat Apulia”.[4][10]

Semantic evolution

Already Latin used the adjective for what is easy and clear, and these senses are in Italian by Bono Giamboni (before 1292).[7][4] The adverb “slowly” is in Dante and “in a low voice” in Boccaccio (1353); as a musical direction for playing softly piano is recorded in 1584, and it passed into German in 1619, English in 1638 and French in 1732.[4][11]

The noun took on the senses of a flat surface (1556), of each storey of a building (Vasari, before 1574) and, with Galileo (1638), of the plane of geometry.[4] The storey sense reached English in 1860.[11] From the geometrical plane came the figurative “level” (sullo stesso piano).[6]

The instrument was announced in 1711 as a harpsichord col piano e forte, the invention of Bartolomeo Cristofori;[4][5] pianoforte is recorded from 1771 and the short piano from 1831.[4][5]

Timeline

  • End of the 12th century – The noun “plain” is recorded in a Tuscan document.[4]
  • Before 1272 – King Enzo uses the adjective “flat”.[4]
  • Before 1292 – Bono Giamboni uses it for “easy, clear”.[4]
  • Before 1321 – Dante uses the adverb “slowly”.[4]
  • 1353 – Boccaccio uses it for “in a low voice”.[4]
  • Before 1574 – Vasari uses piano for a storey of a building.[4]
  • 1584 – Piano is used as a musical direction.[11]
  • 1638 – Galileo uses piano for the plane of geometry.[4]
  • 1638 – The musical term is recorded in English.[11]
  • 1831 – Piano is used for the pianoforte.[4]

Meanings

Adjective

  1. flat, level, without rises or hollows: una strada piana; flat, neither concave nor convex: un piatto piano.[2][6][1]
  2. (geometry) Lying in a plane: geometria piana.[2]
  3. (figurative) Easy, smooth; clear, plain: uno stile piano.[2][1]
  4. (linguistics) Stressed on the second-to-last syllable.[2][1]
  5. (athletics) Of a race run without hurdles.[2]

Adverb

  1. slowly, gently, with care: Guida piano![1][6]
  2. Softly, in a low voice, (music) piano.[1][11]

Noun

  1. A flat surface forming the top of a piece of furniture; a shelf: il piano della scrivania.[6][2]
  2. Flat land, a plain.[6]
  3. (geometry) A plane.[6][1]
  4. A storey of a building: Abitiamo al terzo piano.[6][1]
  5. (figurative) Level, degree of importance; point of view: sul piano economico.[6]
  6. A piano, short for pianoforte.[6][1]

Word family

  • piana
  • pianura
  • pianoro
  • pianerottolo
  • pianella
  • pianeggiare
  • pianterreno
  • pianoterra
  • altopiano
  • appianare
  • spianare
  • ripiano
  • pianoforte
  • pianista
  • pianino

piano2 plan

Confidence
Established
Formation
Borrowing
First attested
1685
Borrowed from
French plan
Ultimate origin
French planter
Etymology tree of piano2
inherited borrowed derived
French plan
Dutch plan
English plan
German Plan
Italian piano
Derived words · piano2
German planen ← Plan

Pronunciation

Forms

piano m (plural piani)[1]

Etymology

The word meaning “plan” is borrowed from French plan (“drawing, plan; project”), recorded in French from 1569 for a drawing and, from 1600 for a worked-out project.[4][5][6] The French noun was first ⟨plant⟩, “planting, a thing planted”, from planter (“to plant, to found”), and was reshaped under the influence of plan (“flat”), which comes from the same Latin adjective as homograph 1; the confusion arose in the language of architecture.[4][5]

The derivatives pianificare and pianificazione are calques of the Russian terms of Soviet five-year planning, and appear in the 1930s.[5][4]

Earliest recorded meaning

The first record is in Giovanni Battista Lauri in 1685, in the sense “programme, project, purpose”.[4][6][5] The sense “technical drawing of a building or machine” follows in Giovanni Pietro Bergantini in 1758.[4]

Semantic evolution

DEI records the word in military language and in the phrase piano di guerra “plan of war” (1851).[3] In the 20th century it became a word of economic planning (piano quinquennale “five-year plan”), and pianificare is first recorded in 1937, in “planned terrorism” in L'Unità.[4][5] In everyday use it now means any scheme or intention (che piani hai per l'estate?).[6]

Timeline

  • 1569 – French plan is recorded for a drawing.[4]
  • 1685 – Giovanni Battista Lauri uses piano for a programme or project.[4]
  • 1758 – Bergantini uses it for a technical drawing.[4]
  • 1937 – Pianificare is first recorded.[4][5]

Meanings

Noun

  1. A technical drawing of a building, machine or other structure, used as a guide in making it.[6]
  2. A plan, a programme of action: un piano di evacuazione.[6][1]
  3. An idea or scheme for the future: Hai già dei piani per domani?[6][1]

Word family

  • pianificare
  • pianificazione
  • pianificatore

Usage notes

A minor homograph piano “of Pope Pius” is used in abito piano, the cassock that Pius IX made obligatory, and in the papal Ordine piano.[10][6] Common phrases of piano “flat; slowly” include piano piano “very slowly”, andarci piano “to go easy” and primo piano “foreground; close-up”.[1][6]

References

  1. ^ a b c d e f g h i j k l m n o p q r Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  3. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 2894
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z 27 Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  5. ^ a b c d e f g h i j k l Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  6. ^ a b c d e f g h i j k l m n o p q r s De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  7. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 2893
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  9. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ a b Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 13, 277
  11. ^ a b c d e Stammerjohann, Harro, et al. (2008), Dizionario di italianismi in francese, inglese, tedesco, Firenze: Accademia della Crusca; online at difit.italianisticaonline.it

Borrowed into

Related etymologies

Cite this entry

“Piano.” Etymologically, 21 Oct. 2026, etymologically.com/it/piano. Accessed 22 Oct. 2026.

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