óxidovsóxidosWhich spelling fits?

Which to use

“óxido” and “óxidos” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#17,580
“óxido” frequency rank
#39,540
“óxidos” frequency rank
57120
confusion score

Side-by-Side Comparison

Feature óxido óxidos
Definition compuesto con oxígeno, en el cual está en estado de oxidación -2 Forma del plural de óxido.

Where the eye mixes óxido and óxidos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. óxido runs 5 letters (VCVCV) against óxidos's 6 (VCVCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
óxido
6 ch
óxidos

Why the eye confuses óxido with óxidos

A purely visual mix-up. óxido ([ˈoksið̞o]) and óxidos ([ˈoksið̞os]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “óxido” sits inside “óxidos”. Our composite confusion score for this pair is 57120, derived from the frequency rank of both members and their visual similarity.

óxido is recorded at frequency rank #17,580, classified as anoun, pronounced [ˈoksið̞o]. óxidos is at rank #39,540, tagged as anoun, pronounced [ˈoksið̞os].

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 57120, this pair ranks #71,772 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of óxido vs óxidos

Shared letters: dioxó. Private to "óxido": -. Private to "óxidos": s.

"óxido" · 5 letters · shape VCVCV  ·  "óxidos" · 6 letters · shape VCVCVC

Frequently Asked Questions

Can "óxido" and "óxidos" be used interchangeably?
No. They are said differently ([ˈoksið̞o] versus [ˈoksið̞os]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "óxido" or "óxidos" show up more?
"óxido" is the more common of the two: it sits at frequency rank #17,580 in our Spanish list, against #39,540 for "óxidos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "óxido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "óxidos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #71,772 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "óxido" and "óxidos" also get mixed up with nearby pairs, the highest-scored neighbour is "odiados vs óxidos". Nearby pair

Confusion rank #71,772 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list