Etymologically

Etymology and origin of the Spanish word átomo

Confidence
Established
Formation
Borrowing
First attested
c. 1330 Don Juan Manuel More words from the 14th century
Borrowed from
Latin atomus
Ultimate origin
Ancient Greek τέμνω
Etymology tree
inherited borrowed derived
Ancient Greek ἄτομος (átomos)
Latin atomus
Italian attimo
English atom
Spanish átomo
The word's journey
From the same root
Latin atomicus ← atomus
English atomic ← atom

Pronunciation

  • /ˈatomo/, [ˈa.t̪o.mo][1]

Forms

átomo m (plural átomos)[1]

Etymology

It is borrowed from Latin atomus (“indivisible; atom”), a learned word first found in the works of Don Juan Manuel, who died in 1348.[2][3][4][1] The Latin word is taken from Ancient Greek ἄτομος (átomos, “uncut, indivisible”),[2][5][1] formed from ἀ- (a-, “not”) and τομ- (tom-), the o-grade of the root of τέμνω (témnō, “to cut”).[1][6] The Greek philosophers Democritus and Epicurus used it for the indivisible particle of matter, and 19th-century chemistry gave it its modern sense.[7]

The Latin word also had a popular outcome in Italian, Italian attimo (“instant, moment”).[8] Corominas lists diatomea as a learned word from διάτομος (diátomos, “cut in two”), another derivative of the same Greek verb.[2][3]

Earliest recorded meaning

Corominas dates the first record to Don Juan Manuel, about 1330.[2][3] The DEMel lists the word in the vocabulary of his works,[9] and DICCA-XV reports a CORDE record of 1327–1332.[10] The sense was the philosophers' one: the smallest body, thought to be impossible to divide.[2][11]

Semantic evolution

Nebrija glossed it about 1495 as a thing that cannot be divided, with Latin atomus.[10] Covarrubias in 1611 used it for the tiny motes that float in the air and are seen only in a sunbeam coming through a crack in the window, and also for the elements, whose parts are all of one kind.[12] Autoridades kept the indivisible body and the motes, and added a figurative sense, any very small thing, much used by the poets, with phrases such as no exceder en un átomo “not to go beyond something in the least”.[11][13]

Gaspar y Roig in 1853 noted an obsolete sense, the smallest parts of an hour,[14] which goes back to Medieval Latin, where atomus meant the smallest part of an hour.[15] In 1899 the Academy defined the atom as the hypothetical primary element of bodies, infinitely small,[16] and the 2001 edition describes it as the smallest quantity of a chemical element, made of a nucleus with protons and neutrons and orbiting electrons.[4] The first record from the Americas, in 1591 in Mexico City, already uses it for a tiny amount: un áthomo de azogue “an atom of quicksilver”.[17]

Timeline

  • c. 1330 – first record, in Don Juan Manuel.[2][3]
  • c. 1495 – Nebrija glosses it as a thing that cannot be divided.[10]
  • 1591 – first record from the Americas, in Mexico City.[17]
  • 1611 – Covarrubias explains it as a Greek word and applies it to the motes seen in a sunbeam.[12]
  • 1726 – Autoridades records the figurative sense “any very small thing”, with quotations from Lope de Vega.[11]
  • 1884 – the Academy's dictionary gives the etymology from Greek for the first time.[18]
  • 1899 – the Academy defines it as the hypothetical primary element of bodies.[16]

Meanings

Noun

  1. (physics, chemistry) An atom: the smallest quantity of a chemical element that has an existence of its own, once thought to be indivisible, made of a nucleus of protons and neutrons with electrons around it.[4][1][19]
  2. A particle of matter of extreme smallness.[4]
  3. Anything very small; in negative sentences, the least bit: No le quedaba ni un átomo de paciencia.[4][19]

Word family

  • atómico
  • atomismo
  • atomizar

Usage notes

Átomo gramo is the number of grams of an element equal to its atomic weight.[4] The colloquial phrase en un átomo meant “in the least thing” in the 19th-century dictionaries.[16]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 401
  3. ^ a b c d Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. átomo
  4. ^ a b c d e f Real Academia Española (2001), Diccionario de la lengua española, 22nd ed., Madrid: Espasa-Calpe, p. s.v. átomo
  5. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ Gómez de Silva, Guido (1988), Breve diccionario etimológico de la lengua española, México: Fondo de Cultura Económica / El Colegio de México, p. s.v. átomo
  7. ^ Battaner Arias, Paz (dir.) (2017), Diccionario general de la lengua española VOX, Barcelona: Larousse Editorial, p. s.v. átomo
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 757
  9. ^ Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. átomo
  10. ^ a b c Lleal, Coloma (dir.), DICCA-XV: Diccionario del castellano del siglo XV en la Corona de Aragón, Barcelona: Universitat de Barcelona, Grup d'Estudis d'Història de la Llengua (GHCL), https://ghcl.ub.edu/diccaxv, p. s.v. átomo
  11. ^ a b c Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 1, 471
  12. ^ a b Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 240
  13. ^ Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 1, 472
  14. ^ Gaspar y Roig (eds.) (1853–1855), Biblioteca ilustrada de Gaspar y Roig: Diccionario enciclopédico de la lengua española, 2 vols., Madrid: Imprenta y Librería de Gaspar y Roig, p. 1, 272
  15. ^ du Cange, Charles du Fresne, et al. (1883–1887), Glossarium mediae et infimae latinitatis, augmented ed. by Léopold Favre, Niort: L. Favre
  16. ^ a b c Real Academia Española (1899), Diccionario de la lengua castellana, 13th ed., Madrid: Imprenta de los Sres. Hernando y Compañía, p. 107
  17. ^ a b Boyd-Bowman, Peter (2003), Léxico hispanoamericano 1493–1993, ed. Ray Harris-Northall and John J. Nitti, New York: Hispanic Seminary of Medieval Studies, p. s.v. átomo
  18. ^ Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 116
  19. ^ a b Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. átomo

Related etymologies

Cite this entry

“Átomo.” Etymologically, 7 Nov. 2026, etymologically.com/es/%C3%A1tomo. Accessed 7 Nov. 2026.

Last edited on . ·