nautiloid

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noun

A mollusc resembling a nautilus; specifically, a cephalopod of the subclass Nautiloidea.

First used 18th c.Scrabble 10
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Meanings

nounnautiloid (plural nautiloids)

plural nautiloids

  1. A mollusc resembling a nautilus; specifically, a cephalopod of the subclass Nautiloidea.First known use 18th c.

    Cephalopods have a long fossil record, the earliest certain cephalopod fossils are loosely coiled or straight shelled nautiloids found in the Cambrian of China 515 million years ago.

    2016 August 17, Mark Carnall, “I, for one, welcome our new cephalopod overlords ... but what are they?”, in The Guardian, archived from the original on 31 Mar 2019
adjectivenautiloid (comparative more nautiloid, superlative most nautiloid)

comparative more nautiloid · superlative most nautiloid

  1. biologyResembling a nautilus.First known use 19th c.
  2. biologyPertaining to the subclass Nautiloidea.First known use 19th c.

Origin

From nautilus + -oid.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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