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ozone

noun · verb

Simple meaning

An allotrope of oxygen having three atoms in the molecule instead of the usual two.

Pronunciation

Say it like this:

ohzohn

Say the bold part a little louder.

US device voice
IPA pronunciation (US)

ˈoʊzoʊn

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. inorganic chemistry

    An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge.

  2. britishinformal

    Fresh air, especially that breathed at the seaside and smelling of seaweed.

verb

  1. transitive

    To treat with ozone.

Word at a Glance

Difficulty
B1 · Intermediate (estimated)
Frequency
Moderately Common
Typical Use
Varies by meaning

Word Aura™

How this word commonly comes across.

Aura for this meaning

This meaning: (inorganic chemistry) An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge.

Used this way, ozone 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.

Allotrope / colorless

ozone concentrationozone exposure

Other combinations

ozone layerozone depletionozone holetotal ozoneatmospheric ozonelevel ozone

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Word Family

Related forms, grouped by how they connect.

Compound terms

Established multiword terms.

  • ozone holenounCompound term

    An area of the ozone layer (near the poles) that is seasonally depleted of ozone.

  • ozone layernounCompound term

    A layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun.

  • ozone sicknessnounCompound term

    Illness that can occur to persons exposed to ozone in high-altitude aircraft.

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.