thyroid

T1H4Y4R1O1I1D2
/ˈθaɪ.ɹɔɪd/

adjective

Of, relating to, or being the thyroid cartilage.

“a thyroid personality”

Meanings

adjectivethyroid (not comparable)

alternative thyreoid

  1. not comparableanatomyOf, relating to, or being the thyroid cartilage.
  2. not comparableanatomyOf, relating to, or being the thyroid gland.
    1. not comparableanatomySuggestive of a disordered thyroid gland.

      a thyroid personality

  3. not comparablebiologyShield-shaped; peltiform.
nounthyroid (plural thyroids)

plural thyroids · alternative thyreoid

  1. abbreviationellipsisanatomyEllipsis of thyroid cartilage.
  2. abbreviationellipsisanatomyEllipsis of thyroid gland.
    1 more example

    Israel is one of the few countries that widely fluoridates, besides the United States, Canada, Ireland, New Zealand and Australia. Fluoridation, the addition of fluoride to public drinking water supplies to reduce cavities, is the subject of intense controversy, especially outside of the United States. But opposition to the practice, on the grounds that fluoride has adverse effects on the thyroid, brain and bones, and is an unethical form of mass-medication, appears to be growing.

    2013 August 9, Douglas Main, “Israel Outlaws Water Fluoridation”, in Live Science, retrieved 30 Sep 2013
    1. anatomyAn extract prepared from the thyroid gland of animals and used in treating deficiency of thyroid hormones.

Synonyms & antonyms

adjectiveof or relating to the thyroid gland

Similar

nounlocated near the base of the neck

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*dʰwer-
  2. Proto-Hellenic*tʰurā
  3. Ancient Greekθῠ́ρᾱ (thŭ́rā)
  4. Ancient Greekθῠρεός (thŭreós)
  5. Proto-Indo-European*weyd-
  6. Proto-Indo-European*wéydos
  7. Proto-Hellenic*wéidos
  8. Ancient Greekεἶδος (eîdos)
  9. Ancient Greekθῠρεοειδής (thŭreoeidḗs)
  10. New Latinthyreoīdēs
  11. Englishthyroid

Borrowed from New Latin thyreoīdēs, from Ancient Greek θῠρεοειδής (thŭreoeidḗs, “shield-shaped”), from θῠρεός (thŭreós, “an oblong shield”) + -ειδής (-eidḗs, “-form, -like”).

Full word history & related roots →

Translations

Bulgarian щитовиден
  • щитовиден (štitoviden)referring to the thyroid gland
Catalan tiroïdal
  • tiroïdalreferring to the thyroid gland
Chinese Mandarin 甲狀腺的 /甲状腺的, 甲狀腺的 /甲状腺的
  • 甲狀腺的 /甲状腺的referring to the thyroid gland
  • 甲狀腺的 /甲状腺的 (jiǎzhuàngxiàn de)referring to the thyroid gland
Finnish kilpirauhas-
  • kilpirauhas-referring to the thyroid gland
French thyroïde
  • thyroïdereferring to the thyroid gland
Hungarian pajzsmirigy-
  • pajzsmirigy-referring to the thyroid gland
Irish tíoróideach
  • tíoróideachreferring to the thyroid gland
Italian tiroide
  • tiroidereferring to the thyroid gland
Latin thyreoīdēs
  • thyreoīdēsreferring to the thyroid gland
Persian سپردیس, تیروئید
  • سپردیس (separdis)referring to the thyroid gland
  • تیروئید (tiro'id)referring to the thyroid gland
Polish tarczycowy
  • tarczycowyreferring to the thyroid gland
Portuguese tiroide
  • tiroidereferring to the thyroid gland
Russian щитови́дный
  • щитови́дный (ščitovídnyj)referring to the thyroid gland
Spanish tiroides
  • tiroidesreferring to the thyroid gland
Thai ไทรอยด์
  • ไทรอยด์referring to the thyroid gland
Ukrainian щитоподі́бний
  • щитоподі́бний (ščytopodíbnyj)referring to the thyroid gland

Rhymes & wordplay

Rhymes with thyroid

All rhymes →

Anagrams

Cite this entry
APA

thyroid. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/thyroid

MLA

“thyroid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/thyroid. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “thyroid,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/thyroid.

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