ammoniac

adj

"ammoniac" is a 8-letter English headword indexed on PlainSpell.

The verdict

“ammoniac” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of or relating to ammonia, or possessing its properties.

Corpus desk

Index EN-ammoniac · ammoniac · English

ammoniac · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "A" thin
  • PHOTO-UNK Peer pending

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.

Key facts for ammoniac
PropertyValue
Headwordammoniac
LanguageEnglish
Part of speechAdjective
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “ammoniac” in English

ammoniacfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

ammoniac is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Of or relating to ammonia, or possessing its properties.".

Our edit-distance generator produced no likely misspellings for ammoniac, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Middle English ammoniak, from Medieval Latin ammōniacum. The correct English form is ammoniac, spelled A-M-M-O-N-I-A-C.

Definition

  1. 1
    Of or relating to ammonia, or possessing its properties.

Recorded use

Wiktionary example

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

  1. an ammoniac salt; ammoniacal gas

Etymology

From Middle English ammoniak, from Medieval Latin ammōniacum.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "ammoniac"?
"ammoniac" is spelled A-M-M-O-N-I-A-C.
What does "ammoniac" mean?
As an adjective, "ammoniac" means: Of or relating to ammonia, or possessing its properties.
What is the origin of the word "ammoniac"?
From Middle English ammoniak, from Medieval Latin ammōniacum. 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.

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

Source: FrequencyWords open word-frequency list