sea dragon

noun

leafy sea dragon (Phycodurus eques)

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Meanings

nounsea dragon (plural sea dragons)

plural sea dragons · alternative sea-dragon · alternative seadragon

  1. Various sea animals that are likened to dragons:
    1. leafy sea dragon (Phycodurus eques)
    2. weedy sea dragon (Phyllopteryx taeniolatus)
    3. ruby sea dragon (Phyllopteryx dewysea)
    4. A blue sea dragon, a sea slug of species Glaucus atlanticus.
  2. UKdatedAn ichthyosaur (dinosaur-age delphine marine reptile)
  3. fantasyA type of dragon that inhabits oceans.

    These sea giant see the open vast oceans as all theirs for the taking and they will openly engage in wars with sea dragons, leviathans, and under water races.

    2011, Joseph Barresi, The Creatures of Arator, volume II, midnightrise, page 210
    4 more examples

    In the Gentleman's Magazine for the year 1749, we have an account of a ſea-dragon which was ſaid to be taken between Orford and Southwould, on the coaſt of Suffolk[.]

    1810, Charles Gould, Encyclopædia Britannica, volume XIX, Edinburgh: Archibald Constable and Co., page 68, column 2

    I may note that there is a bay, not far from this spot, among the Chusan islands, which has long been credited with being the abode of a great sea-dragon, and in passing over which junks take certain superstitious precautions.

    1886, Charles Gould, Mythical Monsters, London: W.H. Allen and Co., page 305

    There were writhing sea-dragons and monsters slouching on slopes by the cliff, serpents and wild things such as those that often surface at dawn to roam the sail-road and doom the voyage.

    1999, Seamus Heaney, Beowulf, London: Faber and Faber, page 47

    Rāb(ṇ) gave command to his son, Narātǎk, who, with sea-dragons yoked to his chariot and with bow and arrow in hand, marshalled his officers and forces in urgent haste.

    2013, Judith M. Jacob, The Cambodian Version of the Ramayana, London: Routledge, page 10

    Synonyms: sea drake

Synonyms & antonyms

nounA type of dragon that inhabits oceans.

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Origin

  1. Old Englishsǣdraca
  2. Englishsea dragon

From sea + dragon; in the mythic sense, some instances represent a learned calque of Old English sǣdraca, compound of sǣ (“sea”) + draca (“dragon”). Piecewise doublet of sea drake (“sea dragon”).

Full word history & related roots →
Cite this entry
APA

sea dragon. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/sea%20dragon

MLA

“sea dragon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sea%20dragon. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “sea dragon,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/sea%20dragon.

Source: sea dragon on Wiktionary, CC BY-SA 4.0.