synaesthesia

syn·aes·thes·ia
S1Y4N1A1E1S1T1H4E1S1I1A1
UK/ˌsɪn.ɪsˈθiː.ʒə/UK/ˌsɪn.ɪsˈθiː.zɪ.ə/US/ˌsɪn.əsˈθi.ʒə/

noun

A neurological or psychological phenomenon whereby a particular sensory stimulus triggers a second kind of sensation.

UncommonFirst used late 19th c.Scrabble 18

Meanings

nounsynaesthesia (countable and uncountable, plural synaesthesiae or synaesthesias)

plural synaesthesiae · plural synaesthesias · alternative synæsthesia · alternative synesthesia

  1. countableuncountablehuman sciencesA neurological or psychological phenomenon whereby a particular sensory stimulus triggers a second kind of sensation.First known use late 19th c.

    […] R. H. Gault's case of synesthesia in a deaf and blind girl, who could distinguish colors by the sense of smell, […]

    1926 July, Paul Campbell Young, “An Experimental Study of Mental and Physical Functions in the Normal and Hypnotic States: Additional Results”, in Margaret F[loy] Washburn, Karl M. Dallenbach, [Isaac] Madison Bentley, Edward G. Boring, editors, The American Journal of Psychology, volume XXXVII, Ithaca, N.Y.: Cornell University, →ISSN, →OCLC, footnote 6, page 346
    5 more examples

    M. [Théodore] Flournoy includes all the phenomena of "Colored Hearing" and of "Mental Forms" under the convenient and adequate name Synæsthesia—in place of which, to be sure, he himself usually employs the less defensible term Synopsie. […] The phenomena of synæsthesia are divided into three main groups: "photisms," among which are included, as by [Eugen] Bleuler and Lehmann, all the varieties of pseudo-chromesthesia; "Schemes," comprising not only "forms" (diagrammes) associated with series of words or numbers, but "symbols," or particular figures associated with single letters, numerals, colors and the like; and "personifications," in which the associated factor is no mere color or form, but has become richer and more concrete.

    1893 July, Mary Whiton Calkins, “De Phénomènes de Synopsie. Par Th. Flournoy. Paris, Alean, 1893. [book review]”, in G[ranville] Stanley Hall, editor, The American Journal of Psychology, volume V, number 4, Worcester, Mass.: J. H. Orpha, publisher, →ISSN, →OCLC, page 550

    Probably in all of us, though in some men much more distinctly than in others, there exist certain synæsthesiæ or concomitances of sense-impression, which are at any rate not dependent on any recognisable link of association.

    1903, Frederic W[illiam] H[enry] Myers, “Sensory Automatism”, in Human Personality and Its Survival of Bodily Death … In Two Volumes, volume I, London; New York, N.Y.: Longmans, Green, and Co., […], →OCLC, paragraph 603, page 224

    Now just as normal perceptions in terms of sense organs different from those stimulated can be interpreted through common past experiences, so it is likely that synæsthesias may be partly explicable in terms of individual experiences.

    1945, Julian Blackburn, “Introduction”, in Psychology and the Social Pattern (International Library of Sociology and Social Reconstruction; 251), London: Kegan Paul, Trench, Trübner & Co., →OCLC; republished London: Routledge, 2013, →ISBN

    Into her darkness, a churning synaesthesia, where her pain was the taste of old iron, scent of melon, wings of a moth brushing her cheek.

    1984, William Gibson, chapter 18, in Neuromancer (Sprawl; book 1), New York, N.Y.: Ace Books, →ISBN, page 221

    For example, I myself have a type of synaesthesia: The sounds of musical instruments will sometimes make me see colors, about a yard in front of me, each color specific and consistent with the particular instrument playing.

    2002, Sean A. Day, “What Synaesthesia Is (and Is Not)”, in Paul Mc Kevitt, Seán Ó Nualláin, Conn Mulvihill, editors, Language, Vision and Music: Selected Papers from the 8th International Workshop on the Cognitive Science of Natural Language Processing, Galway, Ireland 1999 (Advances in Consciousness Research; 35), Amsterdam; Philadelphia, Pa.: John Benjamins Publishing Company, →ISBN, →ISSN, page 171
  2. broadlycountableuncountableThe association of one sensory perception with, or description of it in terms of, a different perception that is not experienced at the same time.

    On a phonemic level, phenomena of synesthesia have often been described and studied. Practically all children and a good many adults—though for the most part adults will deny it—spontaneously associate sounds, whether phonemes or the timbre of musical instruments, with colors and forms.

    1963, Claude Lévi–Strauss, “Postscript to Chapters III and IV”, in Claire Jacobson, Brooke Grundfest Schoepf, transl., Structural Anthropology: Translated from the French (Harper Torchbooks; TB5017), New York, N.Y.: Basic Books, →OCLC, pages 91–92
    1 more example

    For one of the enigmatic features of synaesthesia is that, within a given cultural group, the kinds of associations made by different subjects occur according to statistically verifiable recurring patterns. As Jakobson explains, ‘when we ask whether /i/ or /u/ is darker, testing such phonic oppositions as grave vs. acute, some of the subjects may respond that this question makes no sense to them, but hardly one will respond that /i/ is the darker of the two’[…].

    2007, Boris Wiseman, “Structuralism, Symbolist Poetics and Abstract Art”, in Lévi-Strauss, Anthropology, and Aesthetics (Ideas in Context; 85), Cambridge: Cambridge University Press, →ISBN, page 112
  3. countableuncountableartA literary or artistic device whereby one kind of sensation is described in the terms of another.
    2 more examples

    Linking moods with colours is one example of synaesthesia. […] As a tool for improving writing, the idea of synaesthesia is versatile and innovative. Why use only visual references to describe visual impressions? Why just describe sounds using sound-related words? Play with cross-matching the senses.

    2006, Stephen Bowkett, “Descriptive Writing”, in Boys and Writing (Pocket PAL), London: Network Continuum Education, Continuum International Publishing Group, →ISBN, page 38

    [I]t may be stated that the concept of synaesthesia is instrumental for understanding music videos, since videos are based on the soundtrack's visual associations. Yet to discuss associations here may cause some problems. […] [Nicholas Cook] seems to be relying on a rather normative conception of synaesthesia, which for its part supports the idea of absolute, nonrepresentational music. The implication of his discussion is that the "true" forms of music–image synaesthesia come only in the forms of perception of color or light when hearing a certain musical sound.

    2007, Antti-Ville Kärjä, “Visions of a Sound Nation: Finnish Music Videos and Secured Otherness”, in Roger Beebe, Jason Middleton, editors, Medium Cool: Music Videos from Soundies to Cellphones, Durham, N.C.; London: Duke University Press, →ISBN, page 181

Synonyms & antonyms

nouna sensation that normally occurs in one sense modality occurs when another modality is stimulated

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Ancient Greekσύν“with”
  2. Englishsynaesthesia

From Ancient Greek σύν (sún, “with”) + αἴσθησις (aísthēsis, “sensation”), modelled after anaesthesia. It is analysable as syn- + -aesthesia.

Full word history & related roots →

Translations

Bulgarian синестезия
  • синестезия (sinestezija)neurological or psychological phenomenon
Catalan sinestèsia, sinestèsia
  • sinestèsianeurological or psychological phenomenon
  • sinestèsialiterary or artistic device
Chinese Mandarin 聯覺 /联觉, 通感
  • 聯覺 /联觉 (liánjué)neurological or psychological phenomenon
  • 通感 (tōnggǎn)literary or artistic device
Czech synestezie, synestezie
  • synestezieneurological or psychological phenomenon
  • synestezieliterary or artistic device
Dutch synesthesie, synesthesie
  • synesthesieneurological or psychological phenomenon
  • synesthesieliterary or artistic device
Finnish synestesia, aistien sekoittuminen
  • synestesianeurological or psychological phenomenon
  • aistien sekoittuminenneurological or psychological phenomenon
  • synestesialiterary or artistic device
French synesthésie, synesthésie
  • synesthésieneurological or psychological phenomenon
  • synesthésieliterary or artistic device
German Synästhesie
  • Synästhesieneurological or psychological phenomenon
Greek συναισθησία
  • συναισθησία (synaisthisía)neurological or psychological phenomenon
Hungarian szinesztézia, összeérzés
  • szinesztézianeurological or psychological phenomenon
  • összeérzésneurological or psychological phenomenon
  • szinesztézialiterary or artistic device
  • érzetcsereliterary or artistic device
Icelandic samskynjun
  • samskynjunneurological or psychological phenomenon
Irish sinéistéise
  • sinéistéiseliterary or artistic device
Italian sinestesia, sinestesia
  • sinestesianeurological or psychological phenomenon
  • sinestesialiterary or artistic device
Japanese 共感覚
  • 共感覚 (kyōkankaku)neurological or psychological phenomenon
Latin synaesthēsia
  • synaesthēsianeurological or psychological phenomenon
Polish synestezja, synestezja
  • synestezjaneurological or psychological phenomenon
  • synestezjaliterary or artistic device
Portuguese sinestesia, sinestesia
  • sinestesianeurological or psychological phenomenon
  • sinestesialiterary or artistic device
Russian синестези́я
  • синестези́я (sinestezíja)neurological or psychological phenomenon
Spanish sinestesia, sinestesia
  • sinestesianeurological or psychological phenomenon
  • sinestesialiterary or artistic device
Swedish synestesi, synestesi
  • synestesineurological or psychological phenomenon
  • synestesiliterary or artistic device

Rhymes & wordplay

Rhymes with synaesthesia

All rhymes →
Cite this entry
APA

synaesthesia. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/synaesthesia

MLA

“synaesthesia.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/synaesthesia. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “synaesthesia,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/synaesthesia.

Source: synaesthesia on Wiktionary, CC BY-SA 4.0.