p/p/
Press your lips together to stop the air, then release. No vocal cord vibration.
How to pronounce plankton in American English
PLANGK·tuhn
Start here
Americans pronounce plankton as PLANGK-tuhn (/ˈplæŋktən/). In "plankton", the "a" vowel before NG shifts toward "ay" — sounding like "ay" as in "say", a distinctly American pattern — most prominent in Midwestern American English; other GenAm speakers may use a less raised vowel. This is called the Cat-Vowel Before NG, a small move that separates 'classroom' from 'native'. It comes out as PLANGK·tuhn. Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "Plankton is the foundation of the marine food web".
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Sound by sound
Every sound in "plankton".
2 syllables, 8 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
l/l/
Place the tip of your tongue against the alveolar ridge just behind your top front teeth, the same contact point as /t/, /d/, and /n/. The difference is what happens to the air: for /l/, you let it flow continuously around the <em>sides</em> of the tongue (that's why /l/ is called a lateral). Turn your voice on the whole time. Lips stay relaxed, no rounding or flaring. For the Dark L variant at the end of a syllable, also pull the back of the tongue up and back toward the soft palate.
a/æ/
Nasalized-ngBefore NG, the vowel changes to sound more like the AY (/eɪ/) diphthong. The middle part of the tongue lifts toward the roof of the mouth, then the front part arches up.
ng/ŋ/
Lift the back of your tongue to the soft palate. Lower your soft palate to let air flow through your nose.
k/k/
Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.
t/t/
Touch the tip or front edge of your tongue to the roof of your mouth just behind your teeth. Keep your jaw relaxed. Stop the air, then release with a puff.
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.
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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
Pronouncing the vowel before NG too pure.
In "plankton", the "a" vowel before NG shifts toward "ay" — sounding like "ay" as in "say", a distinctly American pattern — most prominent in Midwestern American English; other GenAm speakers may use a less raised vowel. Vowel changes to sound like /eɪ/ ("ay" as in "say").
PLANGK-tuhn→PLANGK·tuhn
02
Releasing the final consonant with a puff of air.
In "plankton", the "t" is not released — the articulators get into position but hold without the burst of air. Air stops but there's no release burst — the articulators hold position.
plankton→PLANGK·tuhn
03
Inserting a vowel before the syllabic consonant.
In "plankton", 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.
plankton→PLANGK·tuhn
04
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch PLANGK — keep everything else short and quick.
plangk·TUHN→PLANGK·tuhn
Questions
Questions people ask about this.
How is "plankton" stressed in American English?
Stress falls on the first syllable — say "PLANGK" with a longer, fuller vowel and keep every other syllable short and quick. The respell "PLANGK-tuhn" marks the stressed syllable in capitals so the rhythm is easy to read at a glance.
Why does the second syllable in "plankton" 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 "PLANGK-tuhn" shows the reduced form so you can hear the casual rhythm directly.
Is the American pronunciation of "plankton" 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 "PLANGK-tuhn" reflects the casual American form; British dictionaries typically print a citation form with crisper consonants and different vowel choices.
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