Etymologically
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embryo

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Pronunciation

  • UK: /ˈɛmbɹi.əʊ/[1]
  • US: /ˈɛmbɹi.oʊ/[1]

Etymology

It is borrowed from Medieval Latin embryo, also embryon,[2][3][4][5] from Ancient Greek ἔμβρυον (émbruon, “young animal, fetus”).[2][4][6][7] The OED explains the Latin embryo as a reinterpretation of embryon after the Latin nouns in -iō,[2] and the Shorter Oxford calls it a mistaken form arising from a misreading of the Greek noun's ending;[8] English also had the form embryon from the 15th to the 18th century.[2][6] The Greek noun is formed from ἐν (en, “in”) and βρύω (brúō, “to swell, be full”),[4][9][6][10][7] so that it meant "that which grows inside";[10][7] the OED instead derives the second part from βρύον (brúon, “moss”), literally "something that swells".[2] Partridge compares Old Norse brum (“bud”) and a root Proto-Indo-European *bhreu- (“to swell”).[11]

Earliest recorded meaning

An unborn human offspring, especially in its early stages: 1576, in G. Baker's translation of Gesner's Newe Jewell of Health.[2] Merriam-Webster dates the word to 1548.[3] Trevisa's translation of Bartholomaeus Anglicus (before 1398) already has embrio, which Barnhart takes as the first English record[5] and the OED as the Latin word used in an English text.[2] Etymonline dates the word to the mid-14th century.[4]

Semantic evolution

From the unborn human child the word spread by 1638 to the unborn or unhatched young of an animal.[2] A figurative use, a thing in its first, undeveloped form, appears in 1608, and the phrase in embryo, in a rudimentary stage, in 1631.[2] Alchemists used it for a metal in a hidden or imperfect state in the earth (1652–1778),[2] and botanists have used it since 1682 for the young plant inside a seed.[2][8] As an adjective, undeveloped or immature, it is recorded from 1659.[2] In modern medicine an embryo is the human offspring up to about the end of the second month of pregnancy, after which it is a fetus.[12]

Timeline

  • 1576 – the unborn human offspring.[2] Merriam-Webster dates the word to 1548.[3]
  • 1608 – figurative, a thing in a rudimentary form.[2]
  • 1631 – in embryo, in a rudimentary stage.[2]
  • 1638 – the unborn or unhatched young of an animal.[2]
  • 1659 – adjective, undeveloped, immature.[2]
  • 1682 – the young plant within a seed.[2]
  • 1831 – verb, to create in embryonic form (rare).[2]

Meanings

Noun

  1. An animal in the early stages of development, before birth or hatching.[12][3][2]
  2. A human offspring from conception to about the end of the second month of pregnancy; compare fetus.[12]
  3. The young plant inside a seed.[12][2]
  4. Something in its earliest, undeveloped stage.[2][8]
  5. in embryo: not yet fully formed: The plan was still in embryo.[2][8]

Word family

  • embryectomy
  • embryogenesis
  • embryoid
  • embryology
  • embryonal
  • embryonic
  • embryopathy
  • embryotomy
  • bryophyte

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 Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  6. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  7. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  8. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  9. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  10. ^ a b Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
  11. ^ Partridge, Eric (1966), Origins: A Short Etymological Dictionary of Modern English, 4th ed., London: Routledge & Kegan Paul
  12. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins