diphosphate
"diphosphate" is a 11-letter English headword indexed on PlainSpell.
The verdict
“diphosphate” is uncommon English (frequency #83,187 among 3,470 “D” headwords), classed as a noun. The kind of spelling people second-guess.
- #83,187
- frequency rank, English
- 3,470
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - any salt or ester containing two phosphate groups
Corpus desk
Index EN-diphosphate · diphosphate · English
diphosphate · rank #83,187 · 0 variants · 0 confusables
- FREQ-RARE #83,187
- LEN-MEGA 11 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,470
- PHOTO-FINISH dictaphone
Nearest frequency peer: dictaphone (-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 “diphosphate”
Sparse band: bars invert rank so rarer forms read shorter
- dictaphone
dictaphone
16,815 corpus weight
- diphosphate
diphosphate
16,814 corpus weight
- discotheque
discotheque
16,812 corpus weight
- discourteous
discourteous
16,811 corpus weight
- dither
dither
16,810 corpus weight
- doff
doff
16,809 corpus weight
What this shows Long-tail view: where “diphosphate” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | diphosphate |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Frequency rank | #83,187 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “diphosphate” in English
Rare enough to double-check
diphosphate is uncommon English at frequency #83,187 among 3,470 “D” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
diphosphate has no tracked misspelling variants, typically a sign the spelling maps closely to how the word sounds. This entry stands alone in our confusable dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From di- + phosphate. The correct English form is diphosphate, spelled D-I-P-H-O-S-P-H-A-T-E.
Definition
- 1any salt or ester containing two phosphate groups
- 2any salt or ester of diphosphoric acid; pyrophosphate
Etymology
From di- + phosphate.
Synonyms
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "diphosphate", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 11 letters (nearest by frequency rank).