aldehyde
/ˈæl.dɪ.haɪd/
"aldehyde" is a 8-letter English headword indexed on PlainSpell.
The verdict
“aldehyde” is uncommon English (frequency #55,899 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.
- #55,899
- frequency rank, English
- 3,931
- “A” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of a large class of reactive organic compounds (R·CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.
Corpus desk
Index EN-aldehyde · aldehyde · English
aldehyde · rank #55,899 · 0 variants · 0 confusables
- FREQ-RARE #55,899
- LEN-LONG 8 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,931
- PHOTO-FINISH Alcantara
Nearest frequency peer: Alcantara (-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 “aldehyde”
Sparse band: bars invert rank so rarer forms read shorter
- afterschool
afterschool
44,108 corpus weight
- AIPAC
AIPAC
44,106 corpus weight
- Alcantara
Alcantara
44,103 corpus weight
- aldehyde
aldehyde
44,102 corpus weight
- allis
allis
44,100 corpus weight
- ambit
ambit
44,095 corpus weight
What this shows Long-tail view: where “aldehyde” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | aldehyde |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈæl.dɪ.haɪd/ |
| Letters | 8 |
| Frequency rank | #55,899 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “aldehyde” in English
Rare enough to double-check
aldehyde is uncommon English at frequency #55,899 among 3,931 “A” headwords, classed as anoun, transcribed /ˈæl.dɪ.haɪd/. Rarity is why readers land here mid-draft. Gloss: "Any of a large class of reactive organic compounds (R·CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.".
No generated misspelling entries exist for aldehyde in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Borrowed from German Aldehyd, a contraction of the Latin al(cohol) dehyd(rogenātum). The correct English form is aldehyde, spelled A-L-D-E-H-Y-D-E.
Definition
- 1Any of a large class of reactive organic compounds (R·CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.
Recorded use
Wiktionary exampleThese source excerpts show how aldehyde appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The air smells of strange, oceanic aldehydes.
Etymology
Borrowed from German Aldehyd, a contraction of the Latin al(cohol) dehyd(rogenātum).
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); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "aldehyde", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 8 letters (nearest by frequency rank).