noun · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˈnɔː.tɪ.ləs/
General-American:/ˈnɔ.tɪ.ləs/
General-American:/ˈnɑ.tɪ.ləs/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:N AO1 T AH0 L AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A marine mollusc, of the family Nautilidae native to the Pacific Ocean and Indian Ocean, which has tentacles and a spiral shell with a series of air-filled chambers, of which Nautilus is the type genus.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A kind of diving bell that sinks or rises by means of compressed air.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A paper nautilus (actually an octopus).
Definition source: English Wiktionary via Wiktextract
Qualifier: inexact
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: chambered nautilus, pearly nautilus
Antonyms: none provided
Broader terms: cephalopod, cephalopod mollusk
5
noun
Meaning 5
cephalopod mollusk of warm seas whose females have delicate papery spiral shells
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: paper nautilus, Argonaut, Argonauta argo
Antonyms: none provided
Broader terms: octopod
6
noun
Meaning 6
a submarine that is propelled by nuclear power
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
