rotund

Etymology

It is borrowed from Latin rotundus (“round, circular, spherical; of a speaker, smooth and finished”),^[2][3][4][5] related to rota (“wheel”),^[2][3][6] with an ending like that of secundus (“second”).^[2] Hoad and the Oxford dictionaries derive it instead from rotō (“to rotate”),^[7][8][9] and the Merriam-Webster Collegiate calls the Latin adjective a probable alteration of Old Latin *retundus.^[10] The noun for a wheel goes back to Proto-Indo-European *ret- (“to run, to turn, to roll”).^[3][4] Early spellings were rotounde and rotound.^[3][11] Barnhart took the Middle English form from Italian rotondo and only rotund from Latin,^[11] but the OED's entry, revised in 2011, takes every form from Latin, and compares Middle French rotond, Spanish rotundo and Portuguese rotundo.^[2] It is a doublet of round.^[11][6] The noun is a conversion of the adjective in the OED,^[2] and a shortening of rotunda in Merriam-Webster Unabridged.^[5]

Earliest recorded meaning

Approximately spherical, round: before 1425, in a translation of Guy de Chauliac's Grande Chirurgie, as rotounde.^[2][11] The Shorter Oxford and the Oxford Dictionary of English date the word only to the late 15th century,^[8][9] and the Shorter Oxford calls it rare before the 18th.^[8] The spelling rotund is first dated to 1705, in Addison's Remarks on Italy, by Barnhart and Etymonline,^[11][3] and to 1665 by the Merriam-Webster Collegiate.^[10]

Semantic evolution

The literal sense of roundness came first, and Johnson (1755) still defined the word only as round, circular or spherical.^[12] Of the mouth, the voice or a style it meant rounded, sonorous, full-toned or inflated from 1742,^[2] after the phrase Latin ōre rotundō in Horace,^[2][3] which Etymonline explains from the roundness of the mouth in pronouncing.^[3] Etymonline dates the oratorical use only by 1830,^[3] and the Shorter Oxford to the mid 19th century.^[8] Of a person or a part of the body it meant plump from 1762,^[2] and this sense now stands first in the American Heritage Dictionary.^[4] The literal sense is now chiefly botanical and zoological.^[8] The noun has been rarer: a globe (1550), a round building (from 1606) and, in entomology, a replete (from 1882).^[2]

Timeline

• before 1425 – round, spherical, as rotounde.^[2][11]
• 1550 – noun, a globe (obsolete).^[2]
• 1606 – noun, a round building or space.^[2][5]
• 1619 – the spelling rotound.^[11] Etymonline dates it to the 1610s.^[3]
• 1650 – verb, to make round (obsolete by 1822).^[2]
• 1705 – the spelling rotund, in Addison.^[11][3]
• 1742 – of the mouth and the voice, rounded, sonorous.^[2]
• 1762 – of a person, plump.^[2]
• 1882 – noun, in entomology, a replete.^[2]

Meanings

Adjective

1. Rounded in figure; plump or chubby: a rotund innkeeper.^{[4][5][13][2]}
2. Round or spherical; in botany, of a leaf, roughly circular: a rotund clay pot.^[4][13][2]
3. Of the voice or of speech, full-toned, sonorous; of a style, grandiloquent.^[5][13][2]

Noun

1. (archaic) A rotunda.^[5][2]
2. (entomology) A replete.^[2]

Verb

1. (obsolete, 1650–1822) To make round.^[2][8]

Word family

• rotundity
• rotundly
• rotundness
• subrotund
• unrotund

Related words

• rotunda
• round
• rotary
• rotate
• rota
• orotund

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p q r s t u v w Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c d e The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
5. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
6. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
8. ^ a b c d e f Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
9. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
10. ^ a b Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
11. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
12. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
13. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins