aza
"aza" is a 3-letter English headword indexed on PlainSpell.
The verdict
“aza” is uncommon English (frequency #58,528 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.
- #58,528
- frequency rank, English
- 3,931
- “A” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A nitrogen atom substituted for a carbon atom within a ring.
Corpus desk
Index EN-aza · aza · English
aza · rank #58,528 · 0 variants · 0 confusables
- FREQ-RARE #58,528
- LEN-MID 3 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,931
- PHOTO-FINISH axillary
Nearest frequency peer: axillary (-2 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 “aza”
Sparse band: bars invert rank so rarer forms read shorter
- availing
availing
41,478 corpus weight
- awestruck
awestruck
41,477 corpus weight
- awl
awl
41,476 corpus weight
- axillary
axillary
41,475 corpus weight
- aza
aza
41,473 corpus weight
- backless
backless
41,471 corpus weight
What this shows Long-tail view: where “aza” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | aza |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #58,528 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “aza” in English
Rare enough to double-check
aza is uncommon English at frequency #58,528 among 3,931 “A” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A nitrogen atom substituted for a carbon atom within a ring.".
No generated misspelling entries exist for aza 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, since its spelling is unusual enough that it doesn't cluster with a lookalike.
No explicit etymology string is stored for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is aza, spelled A-Z-A.
Definition
- 1A nitrogen atom substituted for a carbon atom within a ring.
Recorded use
Wiktionary exampleThese source excerpts show how aza appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
"However, aza N-atoms (~N=) have to be counted, if they replace methine groups in the chain."
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 "aza", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).