nautilus

Reading level: hard

Estimated CEFR level: B2 — Upper-Intermediate

Estimated from word frequency; not an official CEFR classification.

Definition

noun a submarine that is propelled by nuclear power
noun cephalopod mollusk of warm seas whose females have delicate papery spiral shells
noun cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions

From Latin nautilus, from Ancient Greek ναυτίλος (nautílos, “paper nautilus, sailor”).

It was the Nautilus’s beacon. — Twenty Thousand Leagues Under the Seas: An Underwater Tour of the World, Jules Verne
“Nautilus,” H.M.S., voyage of, 435, 438. — William Pitt and national revival, J. Holland (John Holland) Rose

nuclear submarine, nuclear-powered submarine

Type a word, a sentence, a book title, or a link to an English article. WordNet and the Classics answer.

Try

A library of classics · a vault of words · instant etymology & meaning