Standard Lemma guide

trioxide

noun · 3 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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  • /trʌɪˈɒksʌɪd/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

Any oxide containing three oxygen atoms in each molecule.

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

Any organic compound of general formula R-OOO-R', derived from trioxidane.

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

3

noun

Meaning 3

an oxide containing three atoms 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: arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane

History

Etymology

Etymology tree Proto-Indo-European *tréyes Proto-Indo-European *tri- Proto-Italic *tri- Latin tri-der. English tri- Proto-Indo-European *h2eḱ-der.? Ancient Greek ὀξύς (oxús) Proto-Indo-European *ǵenh1- Proto-Indo-European *-os Proto-Indo-European *ǵénh1os Proto-Hellenic *génos Ancient Greek γένος (génos) French oxygène Proto-Indo-European *h2eḱ- Proto-Indo-European *-éh1ti Proto-Indo-European *-yeti Proto-Indo-European *-éh1yeti Proto-Indo-European *h2eḱéh1yeti Proto-Italic *akēō Latin aceō Proto-Indo-European *dheh1-der. Proto-Italic *-iðos Latin -idus Latin acidusbor. French acide blend French oxidebor. English oxide English trioxide From tri- + oxide.

Across languages

Translations

4 source translations are retained for this English entry.

  • Finnish: trioksidi — oxide containing three oxygen atoms in each molecule
  • Hungarian: trioxid — oxide containing three oxygen atoms in each molecule
  • Italian: triossido — oxide containing three oxygen atoms in each molecule
  • Spanish: trióxido — oxide containing three oxygen atoms in each molecule