3 syllables: Am, mo, nia. Stress on mo.
uh-MOH-nyuh
/əˈmoʊnjə/
Ammonia is pronounced uh-MOH-nyuh (/əˈmoʊnjə/). It has three syllables (Am-mo-nia), with the stress on "mo". Ammonia is a colorless, pungent gas with the chemical formula NH3, widely used in cleaning products and industrial processes. As a noun, it refers to the compound itself or solutions containing it. It is highly soluble in water and forms ammonium hydroxide, a weak base, in solution. The term is grasped in scientific and everyday contexts alike.
nounAmmonia is a colorless, pungent gas with the chemical formula NH3, widely used in cleaning products and industrial processes. As a noun, it refers to the compound itself or solutions containing it. It is highly soluble in water and forms ammonium hydroxide, a weak base, in solution. The term is grasped in scientific and everyday contexts alike.
"The laboratory smelled of ammonia after the cleaning solution was spilled."
"Ammonia is commonly used in fertilizers to supply nitrogen to plants."
"You should ventilate the room when working with ammonia-based cleaners."
Ammonia is pronounced as æ-MO-nee-uh in US, UK, and AU accents, with the primary stress on the second syllable: a-MMO-nia. Break it into three syllables: /æˈmoʊ.nɪ.ə/ (US) or /æˈməʊ.ni.ə/ (UK). Start with a bright 'a' as in 'cat,' then the stressed 'mo' vowel, followed by a light 'ni' and a soft 'a' at the end. Visualize mouth positions: lips neutral, tongue high for /oʊ/ in some US speakers, and nasalization can occur on the final syllable in casual speech.
Common errors: lengthening the final 'a' to 'ey-a' or misplacing stress on the first syllable (a-MMO-nia instead of a-MMO-nia). Another pitfall is treating the /ɪ/ as /iː/ or pronouncing the middle syllable as 'ah' instead of a short /ɪ/ or /ɪə/. Correct by stressing the second syllable and ending with a clear, unstressed /jə/ or /ni.ə/ sequence. Practice with minimal pairs and slowed articulation.
Across US/UK/AU, the core is /æˈmoʊ.ni.ə/ (US), /æˈməʊ.ni.ə/ (UK), and /æˈmɒ.ni.ə/ (AU). Vowel quality shifts: /oʊ/ in US is rounded and tensed; UK uses a broader /əʊ/ with a more centralized mid onset; AU often features a slightly shorter /ɒ/ or a centralized vowel depending on speaker. The rhotics also vary: US is rhotic, UK is non-rhotic in many dialects, AU often rhotic in casual speech. The final schwa-like ending is common across all, but reduced in rapid speech.
The difficulty lies in the two stresses and the diphthong /oʊ/ (US) or /əʊ/ (UK). The sequence 'mm' can lead to assimilation or a stronger consonant cluster, and the final -ia can blur into /iə/ or /i.ə/ for some learners. Also, the initial 'Am-' can be mispronounced as 'am-uh' rather than 'am-moh.' Focus on the middle vowel and the final light 'a' to achieve a natural, two-stress rhythm.
One unique feature is the strong secondary cue in the middle syllable 'mo' versus 'moʊ' being toward the vowel's peak; some speakers reduce to a near 'moh' or 'muh' depending on region. People often misplace the primary stress on the first syllable; remind yourself to deliver a clear secondary vowel in '-mo-' with a crisp onset, then let the final '-nia' trail with light syllables. Visual cues: lips rounded for /oʊ/ in US, more centralized /əʊ/ in UK, variable in AU.
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Ammonia comes from the Latinized Greek 'ammoniakos,' meaning 'of Ammon,' referring to the ancient Egyptian god Amun. The term entered science through early chemistry traditions in the 16th–18th centuries as scholars discovered and described the gas and its compounds. The modern chemical name NH3 emerged with advances in inorganic chemistry, where ammonia was recognized as a simple triatomic molecule with a lone pair on nitrogen. Its association with ammonium hydroxide in aqueous solution cemented the common naming distinction between gaseous ammonia and the alkaline solution. Early experiments by scholars such as Rutherford and, later, the development of the Haber process, connected ammonia production with nitrogen fixation and fertilizer chemistry, broadening its industrial prominence. The word stayed consistent in European languages, often Latinized as ammonia or amonía in some romance languages, reflecting its chemical identity rather than a localized place-based origin.
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💡 These words have similar meanings to "Ammonia" and can often be used interchangeably.
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Words that rhyme with "Ammonia"
-nia sounds
-ria sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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