ah/ɑ/
Relax your lips and drop your jaw significantly. The tongue tip lightly touches behind the bottom front teeth and the back part of the tongue presses down a little to create more dark space in the back of the mouth.
How to pronounce oxygen in American English
AHK·suh·juhn
Start here
Americans pronounce oxygen as AHK-suh-juhn (/ˈɑksədʒən/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The atmosphere is composed of nitrogen, oxygen, and other gases" or "The circulatory system transports blood and oxygen throughout the body" — more examples below.
Now you try.
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Sound by sound
Every sound in "oxygen".
3 syllables, 7 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
k/k/
Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.
s/s/
Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
j/dʒ/
Touch the front of your tongue to the roof of your mouth, then release into a 'zh' position. Add vocal cord vibration.
uh/ʌ/
Relax your lips, jaw, and tongue completely. Drop your jaw slightly and keep the tongue neutral.
n/n/
SyllabicThe schwa before N disappears — N becomes the vowel of the syllable. Go straight from the previous consonant to N.
In real conversation
Hear "oxygen" in the wild.
Click any sentence to see the full breakdown — every link, every reduction, every flap-T.
"The atmosphere is composed of nitrogen, oxygen, and other gases."
dhee AT·muhs·feer ihz kuhm·POHZD uhv NAHY·truh·juhn AHK·suh·juhn and UH·dher GA·suhz
"The circulatory system transports blood and oxygen throughout the body."
dhuh SUR·kyuh·luh·tor·ee SIH·stuhm tran·SPORTS BLUHD and AHK·suh·juhn throo·OWT dhuh BAH·dee
"Water molecules are composed of two hydrogen atoms and one oxygen atom."
WAH·der MAH·luh·kyoolz er kuhm·POHZD uhv TOO HAHY·druh·juhn A·duhmz and wuhn AHK·suh·juhn A·duhm
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Watch out
Common pronunciation mistakes in American English.
The textbook way isn't wrong — it's just not how anyone actually says it.
01
Inserting a vowel before the syllabic consonant.
In "oxygen", the short unstressed vowel before "n" disappears — the schwa is absorbed and the "n" becomes the syllable nucleus on its own. Schwa is absorbed — consonant becomes the syllable nucleus.
oxygen→AHK·suh·juhn
02
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch AHK — keep everything else short and quick.
ahk·SUH·JUHN→AHK·suh·juhn
03
Pronouncing the unstressed syllable too fully.
Don't pronounce the first syllable too fully. The unstressed syllable reduces to a schwa — the lazy "uh" sound — in casual speech.
AHK·SUH·juhn→AHK·suh·juhn
Questions
Questions people ask about this.
How is "oxygen" stressed in American English?
Stress falls on the first syllable — say "AHK" with a longer, fuller vowel and keep every other syllable short and quick. The respell "AHK-suh-juhn" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the second syllable in "oxygen" reduce to "uh"?
Unstressed syllables in American English collapse toward a schwa — a lazy, neutral "uh" sound. The full vowel is what textbooks teach, but in actual American speech every unstressed vowel reduces. The respell "AHK-suh-juhn" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "oxygen" different from British English?
American English uses different vowel shapes, a relaxed retroflex R, and connected-speech tricks like flap-T and glottal-stop T that British Received Pronunciation generally avoids. The respell "AHK-suh-juhn" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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