dissect

Etymology

It is borrowed from Latin dissectus (“cut in pieces”), the past participle of dissecō (“to cut in pieces”),^{[2][3][4][5][6]} formed from dis- (“apart”) and secō (“to cut”),^[2][3][7][5] from Proto-Indo-European *sek- (“to cut”).^[3][7] Etymonline and Barnhart allow that it may instead be a back-formation from dissection,^[3][4] which Barnhart records from 1581 and takes through Middle French from Medieval Latin.^[4]

Earliest recorded meaning

To cut in pieces, literally or figuratively: 1608, in Topsell's Historie of Serpents.^[2] The dates of other dictionaries are earlier: 1607 in Barnhart,^[4] about 1600 in Etymonline,^[3] 1598 in Merriam-Webster Unabridged.^[5]

Semantic evolution

The word was tied almost at once to anatomy: the OED has the cutting up of an animal or plant to show its internal parts from 1611, in Florio's dictionary,^[2][4] and Barnhart finds dissection in that sense in Bacon's Advancement of Learning (1605).^[4] The figurative sense of taking a thing apart in order to examine it is first recorded in Donne's sermons, before 1631.^[2][4] Johnson (1755) gave "to cut in pieces", remarking that it was used chiefly of anatomical enquiries, then "to divide and examine minutely".^[8] Wordsworth's line "We murder to dissect" draws on the absolute use, to perform a dissection, which the Shorter Oxford dates to the late 17th century.^[9] Surgeons added to dissect out, to remove an organ or a diseased part without taking anything adjoining with it, recorded from 1864,^[2][9] and medicine also has the dissecting aneurysm, a blood-filled cavity where the wall of an artery has split.^[9][5] The OED also records a single chemical use in Barlow's Columbiad (1807) and a commercial use for analysing an invoice by department.^[2]

Timeline

• 1608 – to cut in pieces.^[2]
• 1611 – to cut up an animal or plant to show its internal parts.^[2][4][3]
• before 1631 – to examine minutely, part by part; to analyse or criticize.^[2][4]
• late 17th century – intransitive, to perform dissection.^[9]
• 1864 – to dissect out, to excise an organ without its neighbouring tissue.^[2]

Meanings

Verb

1. To cut open a dead animal or a plant in order to study its structure: The students dissected a frog in the biology lab.^[10][5][2]
2. To examine closely and critically, part by part; to analyse: Reviewers dissected the minister's speech line by line.^[10][2][9]
3. To divide by cutting; to separate into pieces.^[5][2]
4. to dissect out: to remove an organ or a diseased part without removing the tissue next to it.^[2][9][5]
5. To perform a dissection.^[9]
6. (business) To analyse an invoice or account by assigning its items to the departments they belong to.^[2]

Word family

• dissectible
• dissector
• undissected
• redissect
• dissecting microscope

Related words

• dissection
• section
• insect
• bisect
• saw

Usage notes

Barnhart notes a fairly common American pronunciation with /daɪ-/ in the first syllable, which probably arose under the influence of bisect.^[4] Collins and the OED give that pronunciation for British English as well.^[10][2]

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 Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c d e f g h i j Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
5. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
6. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
8. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
9. ^ a b c d e f g Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
10. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins