Phrase guide

periodic acid

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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  • "pûrīŏd'ĭk ă'sĭd
  • /ˌpɜːɹaɪˈɒdɪk ˈæsɪd/

1

noun

Meaning 1

HIO4 or H5IO6, the oxyacids of iodine in which iodine has the highest oxidation number; H5IO6 is a white crystalline substance (HIO4 is not stable), and both are strong oxidizing agents.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: oxyacid, acid, compound, substance, material

2

noun

Meaning 2

any acid of iodine that contains oxygen

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: oxyacid, oxygen acid

History

Etymology

From per- + iodic acid.