Etymologically

solid

Etymology and origin of the English word solid

Confidence
Established
Formation
Borrowing
First attested
c. 1391, Chaucer
Borrowed from
Old French solide via Middle English
Ultimate origin
Proto-Indo-European (*sol-)
Etymology tree
inherited borrowed derived
Latin solidus
English solid

Pronunciation

  • IPA: UK /ˈsɒl.ɪd/, US /ˈsɑː.lɪd/[1]

Etymology

It is inherited from Middle English solide,[2][3] borrowed from Old French solide (“firm, dense, compact”), and directly from Latin solidus (“firm, whole, entire”),[4][2][5] figuratively “sound, genuine”,[4] from a suffixed form of Proto-Indo-European *sol- (“whole”).[4] Latin solidus is related to salvus (“safe”) and sollus (“whole”),[2][5][6] and Merriam-Webster compares Greek holos “entire”.[3] It is related to safe, solder and soldier.[2][4]

Earliest recorded meaning

Not hollow, free from empty spaces: 1391, in Chaucer's Treatise on the Astrolabe,[2][7] the late 14th century in Etymonline, also of three-dimensional figures.[4]

Semantic evolution

“Firm, hard, compact” is from the 1530s,[4] or about 1532 in Barnhart,[2] and “firm, strong, substantial” from 1586.[2] Of qualities, “well-established”, it is from about 1600, and of food from about 1700.[4] “Entirely of the same stuff” is from 1710.[4] As an intensifier, “thoroughly”, it is from 1830, and the slang sense “wonderful” is recorded among jazz musicians by 1920.[4] The sense of unanimity in voting, as a solid state, is from 1855.[4] The noun, a three-dimensional figure, is from before 1398;[2] a solid substance, as opposed to a fluid, is from 1698.[2][7] Solid state in physics is from 1953, and of electronics using transistors rather than valves from 1959.[4]

Timeline

  • 1391 – not hollow, in Chaucer.[2][7]
  • before 1398 – noun, a three-dimensional body.[2]
  • 1530s – hard, compact.[4]
  • 1586 – substantial.[2]
  • 1698 – a solid substance.[2][7]
  • 1710 – of the same material throughout.[4]
  • 1799 – solidify.[2]
  • 1920 – wonderful, in jazz slang.[4]
  • 1953 – solid state.[4]

Modern meaning

Adjective

  1. Having a definite shape and volume; not liquid or gaseous.
  2. Firm and compact; not hollow.
  3. Of the same substance or colour throughout: solid gold.
  4. Having three dimensions.
  5. Strongly built; sturdy and reliable.
  6. Unbroken; continuous: two solid hours.
  7. Unanimous: a solid vote.

Noun

  1. A substance that is neither liquid nor gas.
  2. A geometric figure with three dimensions.

Word family

  • solidly
  • solidness
  • half-solid
  • solidity
  • solid-state
  • nonsolid
  • semisolid
  • solidungulate
  • solidarity
  • solidify
  • solidus
  • consolidate
  • safe
  • solder
  • soldier
  • salvage

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d e f g h i j k l m n Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b c d e f g h i j k l m n o Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  6. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  7. ^ a b c d Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Solid.” Etymologically, 15 Oct. 2026, etymologically.com/en/solid. Accessed 15 Oct. 2026.

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