phosphatidylinositol

noun

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

"phosphatidylinositol" is a 20-letter English headword indexed on PlainSpell.

The verdict

“phosphatidylinositol” is uncommon English (frequency #99,701 among 4,417 “P” headwords), classed as a noun. The kind of spelling people second-guess.

#99,701
frequency rank, English
4,417
“P” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - a phospholipid containing inositol

Corpus desk

Index EN-phosphatidylinositol · phosphatidylinositol · English

phosphatidylinositol · rank #99,701 · 0 variants · 0 confusables

  • FREQ-RARE #99,701
  • LEN-MEGA 20 letters
  • VOW-8 8 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,417
  • PHOTO-FINISH phlebotomy

Nearest frequency peer: phlebotomy (-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.

Long-tail ranks near “phosphatidylinositol”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “phosphatidylinositol” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for phosphatidylinositol
PropertyValue
Headwordphosphatidylinositol
LanguageEnglish
Part of speechNoun
Letters20
Frequency rank#99,701
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “phosphatidylinositol” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).phosphatidylinositolfalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “phlebotomy” (#99,700), “pianissimo” (#99,702), “PHEV” (#99,698). Among 4,417 “P” headwords, “phosphatidylinositol” is #99,701. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

phosphatidylinositol is uncommon English at frequency #99,701 among 4,417 “P” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "a phospholipid containing inositol".

Our edit-distance generator produced no likely misspellings for phosphatidylinositol, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From phosphatidyl + inositol. The correct English form is phosphatidylinositol, spelled P-H-O-S-P-H-A-T-I-D-Y-L-I-N-O-S-I-T-O-L.

Definition

  1. 1
    a phospholipid containing inositol

Etymology

From phosphatidyl + inositol.

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 "phosphatidylinositol"?
"phosphatidylinositol" is spelled P-H-O-S-P-H-A-T-I-D-Y-L-I-N-O-S-I-T-O-L.
What does "phosphatidylinositol" mean?
As a noun, "phosphatidylinositol" means: a phospholipid containing inositol
What is the origin of the word "phosphatidylinositol"?
From phosphatidyl + inositol. See the full etymology section above for more details.
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 "phosphatidylinositol", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 20 letters (nearest by frequency rank).

acetylcholinesterase#96,713hypercholesterolemia#96,072tetrahydrocannabinol#94,331counterrevolutionary#86,169

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

Source: FrequencyWords open word-frequency list