rarefação
/Rɐ.ɾɨ.fa.ˈsɐ̃w̃/
The verdict
“rarefação” is uncommon Portuguese (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency Portuguese
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - ato ou efeito de rarefazer
Corpus desk
Index PT-rarefacao · rarefação · Portuguese
rarefação · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "R" thin
- PHOTO-UNK Peer pending
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | rarefação |
| Language | Portuguese |
| Part of speech | Noun |
| IPA | /Rɐ.ɾɨ.fa.ˈsɐ̃w̃/ |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Cauda longa: rank de “rarefação” em português
Rare enough to double-check
rarefação is uncommon Portuguese outside the top frequency list, classed as anoun, transcribed /Rɐ.ɾɨ.fa.ˈsɐ̃w̃/. Rarity is why readers land here mid-draft. 2 senses are on record.
We couldn't generate a plausible misspelling set for rarefação, since its letter sequence doesn't invite the usual edit-distance slips. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Our source data has no etymology on file for this entry, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct Portuguese form is rarefação, spelled R-A-R-E-F-A-Ç-Ã-O.
Definition
- 1ato ou efeito de rarefazer
- 2diminuição da densidade de um corpo com aumento de volume
Recorded use
Wiktionary exampleThese source excerpts show how rarefação appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
O Inpe está desenvolvendo um sistema de monitoramento dessas áreas por satélite, que mostra a rarefação da cobertura.
Synonyms
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.