seio

/ˈsɐj.u/

//ˈsɐj.u// noun

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“seio” sits in 20 confusable pairs (corpus #8,108) as a noun. The look-alike neighbours are the real trap.

#8,108
frequency rank, Portuguese
1,185
“S” headwords
4
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - curvatura, sinuosidade

Corpus desk

Index PT-seio · seio · Portuguese

seio · rank #8,108 · 4 variants · 20 confusables

  • FREQ-COMMON #8,108
  • LEN-MID 4 letters
  • VOW-3 3 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-LOW 4 variants
  • BOOK-MID 1,185
  • PHOTO-FINISH roxo

Nearest frequency peer: roxo (-2 rank slots)

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.

Vizinhos de frequência do confusável “seio”

Pares de peso semelhante no corpus, aparte dos confusáveis abaixo

corpus weight

What this shows As barras situam “seio” face aos lemas portugueses mais próximos por rank, não um reprint da secretária de confusáveis.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

seio vs só
25% similar
seio vs si
50% similar
seio vs ser
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for seio
PropertyValue
Headwordseio
LanguagePortuguese
Part of speechNoun
IPA/ˈsɐj.u/
Letters4
Frequency rank#8,108
Misspellings tracked4
Confusable pairs20
SourceWiktionary (kaikki.org)

Rank de corpus junto a confusáveis de “seio”

A frequência vai do punhado de palavras do dia a dia (esquerda) à cauda longa quase nunca usada (direita).seiocai aqui:

#1#100#1K#10K#100K
← used constantlyrarely used →

Os ticks avançam em logaritmo; cada um é da ordem de dez vezes mais raro. Na mesma faixa de raridade aparecem “roxo” (#8,106), “rey” (#8,105), “separado” (#8,111). Entre 1,185 lemas com “S”, “seio” fica em #8,108. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for seio is neighbouring look-alikes ("só", "si", …), not just typos; it is anoun pronounced /ˈsɐj.u/. Frequency #8,108 among 1,185 “S” headwords. 8 recorded senses keep meaning in play.

Our generated misspelling index lists 4 likely wrong-spelling variants for seio, with forms such as "esio", "seoi", and "sieo". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "só", "si", "ser", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No explicit etymology string is stored for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct Portuguese form is seio, spelled S-E-I-O.

Definition

  1. 1
    curvatura, sinuosidade
  2. 2
    o peito humano
  3. 3
    cada uma das glândulas mamárias femininas
  4. 4
    parte íntima; âmago
  5. 5
    útero
  6. 6
    ambiente
  7. 7
    convívio, intimidade
  8. 8
    espaço entre as mamas de uma mulher

Recorded use

Wiktionary example

These source excerpts show how seio appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. De acordo com a coluna Olá!, do jornal Agora S.Paulo, nenhuma das 14 páginas com fotos da musa da Copa do Mundo 2010 mostrará o que a tornou famosa: o celular no seio.

Synonyms

mamamamocapeitoentresseio

This word in other languages

breast(English)seno(Español)sein(Français)Brust(Deutsch)

Common misspellings

Also misspelled as:

  • esio
  • seoi
  • sieo
  • sseio

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of seio - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

esio2seoi2sieo2sseio1
Edit distance from "seio"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Portuguese corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "seio"?
"seio" is spelled S-E-I-O. The IPA pronunciation is /ˈsɐj.u/.
What does "seio" mean?
As a noun, "seio" means: curvatura, sinuosidade
What words are commonly confused with "seio"?
"seio" is commonly confused with "só", "si", "ser". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "seio"?
The IPA (International Phonetic Alphabet) transcription for "seio" is /ˈsɐj.u/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "seio" come from?
"seio" is a Portuguese word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar Portuguese words by spelling shape

Same letter count and similar misspelling depth for "seio", not the corpus desk frequency band.

Same letter count

Frequency-ranked Portuguese headwords with 4 letters (nearest by frequency rank).

roxo#8,106fast#8,052days#8,033cota#8,026

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

Source: FrequencyWords open word-frequency list