pith

Etymology

It is inherited from Middle English pithe, inherited from Old English piþa (“pith of a plant”),^[2][3][4][5] from Proto-Germanic *piþô,^[1][6] which Etymonline and Barnhart give as West Germanic *pithan-.^[7][8] The word is found only in the Low German group of languages and its origin is unknown.^{[9][10][11][6]} The OED takes as its certain cognate Middle Low German peddik (“marrow, spinal cord, pith; essence”), with a diminutive suffix.^[10][8] Many dictionaries compare Middle Dutch pitte (“kernel”) and Dutch pit,^[7][9][3][2] the source of pit in the sense of a fruit stone,^[12][13] but the OED notes that their final consonant makes them hard to explain as cognates, although their meanings developed much as in English.^[10]

Earliest recorded meaning

The soft inner tissue of a plant stem: early Old English, in King Alfred's translation of Boethius,^[10][8] where the wood grows from the roots up the stem "along the pith and along the rind".^[4] Alfred's Pastoral Care already uses it figuratively for the essential part of a thing.^[10][8]

Semantic evolution

From the plant the word spread in Old English to the soft core of a feather or horn, and in 1594 to the spinal cord.^[10] The figurative sense of the innermost or essential part, as in pith and marrow, is as old as the literal one.^[10][11] In Middle English the pith of a person was physical strength, vigour or mettle: the OED's first example is Chaucer's Wife of Bath complaining that age has robbed her of her beauty and her pith (about 1395),^[10][14] while Barnhart finds the sense before 1325 in the Cursor Mundi.^[8] From about 1531 the force was that of words, and later chiefly the quality of saying much in few words;^[10] Etymonline dates the sense of energy and vigour of thought and style to the 1520s.^[7] Shakespeare's Hamlet speaks of enterprises "of great pith and moment" (before 1616), the source of the sense "importance, weight".^[10] The soft inner part of a loaf, the crumb, was called pith from about 1425,^[10] a use that survived in Irish English and the dialects of the south-west of England.^[10][15] The verb, first recorded in a rare sense "to give strength" (before 1500), took its modern senses in the 19th century: to kill an animal by piercing the spinal cord (1805) and to remove the pith of a plant (1852).^[10][7] The pith helmet, recorded from 1889 after pith hat in 1884, is made from the dried pith of a plant, the Bengal spongewood.^[7]

Timeline

• Old English – the soft internal tissue of a plant; figuratively, the essential part of a thing.^[10][8]
• c. 1395 – physical strength, vigour, mettle.^[10] Barnhart dates the sense before 1325.^[8]
• c. 1425 – the soft inner part of a loaf, the crumb.^[10]
• c. 1531 – force or energy of words; later, forcible brevity.^[10]
• 1594 – the spinal cord.^[10]
• before 1616 – importance, weight, in Shakespeare's pith and moment.^[10]
• 1805 – verb, to kill or stun an animal by piercing the spinal cord.^[10][7][2]
• 1852 – verb, to remove the pith from.^[10][7]
• 1889 – pith helmet.^[7]

Meanings

Noun

1. (botany) The soft, spongy central tissue in the stems of most vascular plants; the medulla.^[2][16][10]
2. The white spongy layer lining the rind of an orange, grapefruit or similar fruit.^[16][10]
3. The soft core of some animal structures, such as a feather shaft, a horn or a bone.^[16][10]
4. The essential part or central point of something; the gist: She went straight to the pith of the argument.^[16][2][10]
5. Force or strength, especially of expression; substance or weight.^[16][2][10]

Verb

1. To kill an animal, or make it insensible, by piercing or severing the spinal cord; to destroy the central nervous system of a laboratory animal in this way.^[2][16][10]
2. To remove the pith from a plant stem.^[2][16][10]

Word family

• pithy
• pith helmet

Usage notes

Merriam-Webster Unabridged records a dialect pronunciation with the vowel of peth,^[2] and the English Dialect Dictionary forms such as peth and peeth from the Midlands and the south-west.^[15]

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
3. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
4. ^ a b Bosworth, Joseph; Toller, T. Northcote (1898), An Anglo-Saxon Dictionary, Oxford: Clarendon Press; Toller, T. Northcote (1921), Supplement
5. ^ Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
6. ^ a b Köbler, Gerhard (2014), Germanisches Wörterbuch, 5th ed., online, koeblergerhard.de/wikiling
7. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
8. ^ a b c d e f g Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
9. ^ a b 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 d e f g h i j k l m n o p q r s t u v w x y z 27 28 Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
11. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
12. ^ Partridge, Eric (1966), Origins: A Short Etymological Dictionary of Modern English, 4th ed., London: Routledge & Kegan Paul
13. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
14. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
15. ^ a b Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
16. ^ a b c d e f g Collins English Dictionary (2023), Glasgow: HarperCollins