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monoxide

noun

Simple meaning

An oxide containing just one atom of oxygen in the molecule.

Pronunciation

Say it like this:

muhnahksyd

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US device voice
IPA pronunciation (US)

məˈnɑksaɪd

This word is pronounced essentially the same in American and British English, so one transcription covers both.

IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.

Word Review

Definition

Everyday modern meanings first, grouped by part of speech.

noun

  1. chemistry

    An oxide containing just one atom of oxygen in the molecule

  2. chemistry

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

Word at a Glance

Difficulty
C1 · Advanced (estimated)
Frequency
Uncommon
Formality
Technical

Word Aura™

How this word commonly comes across.

This meaning: An oxide containing just one atom of oxygen in the molecule

Used this way, monoxide is a specialist word that usually carries little praise or criticism of its own. This is a scientific use: it names something precisely within a field of study, so it appears in research and teaching more than in conversation.

Emotional tone
Neutral
Formality
Specialist/technical
Intensity
Not strongly marked
How common
Specialized
Connotation
Clinical and technical
Usage feel
Technical and specialized

Where it naturally appears

  • Science
  • Academic writing
  • Technical/specialist writing

Usage note

In general conversation this sense usually needs explaining — outside its field, people reach for a plainer word.

Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.

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Common Patterns and Combinations

How this word naturally appears with others.

carbon monoxidenitrogen monoxidesilicon monoxidelead monoxidechlorine monoxidemonoxide poisoning

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Word Family

Related forms, grouped by how they connect.

Compound terms

Established multiword terms.

  • barium monoxidenounCompound term

    An oxide of barium.

  • carbon monoxidenounCompound term

    An odorless very poisonous gas that is a product of incomplete combustion of carbon.

  • carbon monoxide gasnounCompound term

    An odorless very poisonous gas that is a product of incomplete combustion of carbon.

  • carbon monoxide poisoningnounCompound term

    A toxic condition that results from inhaling and absorbing carbon monoxide gas.

Related Words

Connected to the same idea, not synonyms.

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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.