stimulus

Etymology

It is borrowed from Latin stimulus (“a goad, spur; an incentive”),^[2][3][4] first taken up in medical books written in Latin.^[5][6] In Latin the word meant a pointed stick for driving cattle, and figuratively a sting of pain or a spur to action.^[7][8] Its origin is doubtful:^[5] it is probably from the same base as stilus (“a pointed instrument, stake”) (the source of stylus and style),^[3][9][7] and Klein traces it to Proto-Indo-European *stey- (“pointed”).^[10] Etymonline notes that De Vaan is unsure whether the Latin words for a goad, a stake and a plough handle really belong together.^[7]

Earliest recorded meaning

In physiology, something that goads a sluggish organ into action, or the stimulating effect itself: both in 1684, in a translation of T. Bonet's Guide to the Practical Physician.^[5][11][12] Etymonline dates the medical use to the 1680s.^[7]

Semantic evolution

The word spread from medicine to general use in the 1790s, for anything that spurs a person or thing to action (1791) or quickens a process (1794).^[5][11] In the same decade physiologists narrowed it to an agent that makes an organ or tissue react in a specific way (1793), with the related sense of the irritation of a nerve recorded from 1785.^[5] In 1894, in a translation of Wundt, psychology took it over for any change or event that excites a nerve impulse and produces a sensation or response, the stimulus of stimulus–response theory.^[5][11] Weekley notes that the derived stimulant took on the sense of an alcoholic drink in the 19th century.^[6] The AHD also records its use for government spending meant to boost the economy.^[2]

Timeline

• 1684 – (physiology) something that spurs a sluggish organ; a stimulating effect.^[5]
• 1760 – (natural history) a sting or stinging hair, rare.^[5]
• 1785 – the excitation of a nerve or tissue.^[5]
• 1791 – anything that rouses to action or quickens a process.^[5][11]
• 1793 – an agent that provokes a specific reaction in an organ.^[5]
• 1894 – (psychology) an event that excites a nerve impulse.^[5][11]

Modern meaning

Noun

1. Something that rouses activity or energy; an incentive or spur: The new railway was a stimulus to local trade.
2. (physiology) An agent, change or condition that produces a response in an organism or one of its parts, such as a nerve or muscle.
3. (psychology) A change in energy or an event that is perceived by the senses and calls forth a response.
4. Government spending or tax measures meant to boost economic activity.
5. (medicine, former use) A stimulant.

Word family

• interstimulus
• poststimulus
• prestimulus

Related words

• stimulate
• stimulant
• stylus
• style
• instigate

Usage notes

The plural is stimuli.^[8][3]

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
3. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
5. ^ a b c d e f g h i j k l Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
6. ^ a b Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
7. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
8. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins
9. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
10. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
11. ^ a b c d e Kay, Christian; Roberts, Jane; Samuels, Michael; Wotherspoon, Irené, eds. (2009), Historical Thesaurus of the Oxford English Dictionary, Oxford: Oxford University Press; online edition (2024)
12. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster