PCOS

noun

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

"pcos" is a 4-letter English headword indexed on PlainSpell.

The verdict

“PCOS” has 5 generated spelling variants in the English index at frequency #42,814. The variants make it a useful spelling check.

#42,814
frequency rank, English
4,417
“P” headwords
5
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of polycystic ovary syndrome.

Corpus desk

Index EN-pcos · PCOS · English

PCOS · rank #42,814 · 5 variants · 20 confusables

  • FREQ-MID #42,814
  • LEN-MID 4 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-MID 5 variants
  • BOOK-MID 4,417
  • PHOTO-FINISH Pauly

Nearest frequency peer: Pauly (-1 rank slots)

Read with this headword: Spelling guide for this pattern

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.

Rank peers near misspelling magnet “PCOS”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “PCOS” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

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).

PCOS vs PS
50% similar
PCOS vs po
0% similar
PCOS vs pro
0% similar

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

Key facts for PCOS
PropertyValue
HeadwordPCOS
LanguageEnglish
Part of speechNoun
Letters4
Frequency rank#42,814
Misspellings tracked5
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “PCOS”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).PCOSlands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “Pauly” (#42,813), “perf” (#42,815), “patina” (#42,812). Among 4,417 “P” headwords, “PCOS” is #42,814. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 5 spelling variants around PCOS, anoun. Corpus frequency is #42,814 among 4,417 “P” headwords. Dominant gloss: "Initialism of polycystic ovary syndrome.".

Our generated misspelling index lists 5 likely wrong-spelling variants for PCOS, with forms such as "pccos", "pcoss", and "pcso". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 20 confusable-pair relationships, "PS", "po", "pro", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No documented word history exists for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is PCOS, spelled P-C-O-S.

Definition

  1. 1
    Initialism of polycystic ovary syndrome.

Recorded use

Wiktionary examples

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

  1. The chronic condition affects around 8% to 13% of women and girls of reproductive age worldwide, according to the World Health Organization, but as many as 70% could be experiencing PCOS while undiagnosed.
  2. As many as one in 10 women have PCOS, a condition associated with hormonal disturbances that can range from weight gain, “unwanted” body hair and hair loss, to irregular periods and struggles to conceive children (including an increased risk of miscarriage).

Common misspellings

Also misspelled as:

  • pccos
  • pcoss
  • pcso
  • pocs
  • ppcos

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of PCOS - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

pccos1pcoss1pcso2pocs2ppcos1
Edit distance from "PCOS"

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 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "PCOS"?
"PCOS" is spelled P-C-O-S.
What does "PCOS" mean?
As a noun, "PCOS" means: Initialism of polycystic ovary syndrome.
What words are commonly confused with "PCOS"?
"PCOS" is commonly confused with "PS", "po", "pro". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "PCOS" come from?
"PCOS" is a English 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 English words by spelling shape

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

Same letter count

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

perf#42,815prez#42,834NLRB#42,793Neva#42,790

Similar misspelling depth

Headwords with a similar count of attested misspellings (5 here; floor ≥5).

Palau5 variantskaka5 variantssuki5 variantsGini5 variants

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

Source: FrequencyWords open word-frequency list