Phrase guide

oxalic 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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1

noun

Meaning 1

A colourless, crystalline dicarboxylic acid, (COOH)2, found in rhubarb, spinach and other plants, often as crystals of the calcium salt.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysis

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: ethanedioic acid

Antonyms: none provided

Broader terms: acid

History

Etymology

No etymology was provided for this word.

Across languages

Translations

24 source translations are retained for this English entry.

  • Bulgarian: оксалова киселина (oksalova kiselina) — the dicarboxylic acid (ethandioic acid)
  • Catalan: àcid oxàlic — the dicarboxylic acid (ethandioic acid)
  • Chinese Mandarin: 草酸 (cǎosuān) — the dicarboxylic acid (ethandioic acid)
  • Czech: kyselina šťavelová — the dicarboxylic acid (ethandioic acid)
  • Danish: oxalsyre — the dicarboxylic acid (ethandioic acid)
  • Dutch: oxaalzuur — the dicarboxylic acid (ethandioic acid)
  • Esperanto: okzalacido — the dicarboxylic acid (ethandioic acid)
  • Finnish: oksaalihappo — the dicarboxylic acid (ethandioic acid)
  • French: acide oxalique — the dicarboxylic acid (ethandioic acid)
  • Galician: ácido oxálico — the dicarboxylic acid (ethandioic acid)
  • German: Oxalsäure — the dicarboxylic acid (ethandioic acid)
  • Italian: acido ossalico — the dicarboxylic acid (ethandioic acid)
  • Japanese: シュウ酸 — the dicarboxylic acid (ethandioic acid)
  • Norwegian Bokmål: oksalsyre — the dicarboxylic acid (ethandioic acid)
  • Norwegian Nynorsk: oksalsyre — the dicarboxylic acid (ethandioic acid)
  • Polish: kwas szczawiowy — the dicarboxylic acid (ethandioic acid)
  • Portuguese: ácido oxálico — the dicarboxylic acid (ethandioic acid)
  • Romanian: acid oxalic — the dicarboxylic acid (ethandioic acid)
  • Russian: щаве́левая кислота́ (ščavélevaja kislotá) — the dicarboxylic acid (ethandioic acid)
  • Spanish: ácido oxálico — the dicarboxylic acid (ethandioic acid)
  • Swedish: oxalsyra — the dicarboxylic acid (ethandioic acid)
  • Turkish: oksalik asit — the dicarboxylic acid (ethandioic acid)
  • Ukrainian: щавле́ва кислота́ (ščavléva kyslotá) — the dicarboxylic acid (ethandioic acid)
  • Welsh: asid ocsalig — the dicarboxylic acid (ethandioic acid)