Standard Lemma guide

monoxide

noun · 2 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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  • /məˈnɒksʌɪd/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: M AH0 N AA1 K S AY0 D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Any oxide containing a single oxygen atom in each molecule or formula unit.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

an oxide containing just one atom of oxygen in the molecule

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: oxide

Narrower terms: carbon monoxide, carbon monoxide gas, CO

History

Etymology

Formed as mon- + oxide; compare the earlier dioxide, pentoxide, and tetroxide.

Across languages

Translations

16 source translations are retained for this English entry.

  • Catalan: monòxid — oxide containing a single oxygen atom
  • Dutch: monoxide — oxide containing a single oxygen atom
  • Finnish: monoksidi — oxide containing a single oxygen atom
  • French: protoxyde — oxide containing a single oxygen atom
  • German: Oxydul — oxide containing a single oxygen atom
  • Greek: μονοξείδιο (monoxeídio) — oxide containing a single oxygen atom
  • Hungarian: monoxid — oxide containing a single oxygen atom
  • Irish: aonocsaíd — oxide containing a single oxygen atom
  • Italian: monossido — oxide containing a single oxygen atom
  • Malay: monoksida — oxide containing a single oxygen atom
  • Polish: monotlenek — oxide containing a single oxygen atom
  • Portuguese: monóxido — oxide containing a single oxygen atom
  • Romanian: monoxid — oxide containing a single oxygen atom
  • Russian: моноокси́д (monooksíd) — oxide containing a single oxygen atom
  • Russian: одноо́кись (odnoókisʹ) — oxide containing a single oxygen atom
  • Spanish: monóxido — oxide containing a single oxygen atom
Real reading context

monoxide in complete knowledge articles