4 syllables: Pe, ri, me, ter. Stress on ri.
pur-IM-uh-tur
/pɚˈɪmətɚ/
Perimeter is pronounced pur-IM-uh-tur (/pɚˈɪmətɚ/). It has four syllables (Pe-ri-me-ter), with the stress on "ri". Perimeter is a noun meaning the continuous line forming the boundary of a closed geometric figure. In everyday use it can also refer to the outer boundary or boundary region of a space. The term is common in mathematics, architecture, and surveying, and is pronounced with three syllables in most varieties of English.
nounPerimeter is a noun meaning the continuous line forming the boundary of a closed geometric figure. In everyday use it can also refer to the outer boundary or boundary region of a space. The term is common in mathematics, architecture, and surveying, and is pronounced with three syllables in most varieties of English.
"The fence runs along the perimeter of the property."
"We measured the building’s perimeter to plan the fence layout."
"During the exam, she was asked to calculate the perimeter of a rectangle."
Pronounce as puh-RIM-uh-ter with the primary stress on the second syllable. IPA: US pəˈrɪmɪtər; UK pəˈrɪmɪtə; AU pəˈrɪmɪtə. Start with a schwa in the first syllable, then a clear /ˈrɪ/ in the second, followed by /mɪtər/ with the final syllable reduced slightly in rapid speech. Tip: keep the /r/ light in non-rhotic accents and avoid serial vowel reduction in the second syllable for clarity.
Common errors include: 1) Incorrect secondary stress or misplacing the quadri-syllabic rhythm, making it sound like ‘PER-i-me-ter.’ 2) Reducing the second syllable too much or flattening the /ɪ/ into a schwa. 3) Mispronouncing the final -ter as /tər/ instead of /tə/ in non-rhotic varieties. Correction tips: keep /ˈrɪ/ strong, articulate the /t/ clearly before a light /ər/ in American, and relax the final vowel in British/Australian varieties.
In US English, you hear /pəˈrɪmɪtər/ with a rhotic /r/ in both initial and final syllables and a slightly pronounced final /ər/. UK English generally uses /pəˈrɪmɪtə/ with non-rhoticity affecting the final /ər/ becoming /ə/ and the final syllable less pronounced. Australian English is similar to UK but with slightly broader vowel quality: /pəˈrɪmɪtə/. Across all, the main differences are rhoticity and vowel length in the final unstressed syllable.
The difficulty lies in coordinating the multi-syllabic stress pattern and maintaining a clear /r/ and /t/ sequence within three syllables. English speakers tend to reduce vowels in unstressed syllables, which can blur /ɪ/ into a schwa and obscure the /t/ before a final unstressed vowel. Also, the combination pɚ-ˈrɪ- mən-teɚ requires precise tongue blade positioning. Focusing on the strong second syllable and keeping the second half crisp helps improve intelligibility.
A unique point is the central /ˈrɪ/ syllable where the vowel is short and the /r/ is pronounced clearly in rhotic accents. Ensure you don’t elide /ɪ/ into /ə/ and avoid flattening the /t/ before the final unstressed syllable. You’ll benefit from practicing two-syllable chunks (pe-RIM-, -i-ter) and then smoothing to keep the three-syllable rhythm intact.
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Perimeter derives from the Greek peri- meaning ‘around’ and metron meaning ‘measurement.’ The word entered English from Late Latin perimeter, formed in English in the 17th–18th centuries as mathematical terminology. The Greek roots peri- (around) and metron (measure) reflect its original use to describe the measure around a shape. Historically, perimeter emerged as advances in geometry demanded precise language for describing boundaries of polygons and circles. Early adoptive usage appeared in mathematical treatises and surveyor manuals, where practitioners needed a compact term to denote the total distance around a plot or object. Over time, perimeter solidified its place in civil engineering, architecture, and design contexts, expanding from strictly mathematical usage to everyday descriptors of space and safety—where the perimeter of a property or facility is a critical consideration. First known uses trace to scholarly mathematical language from the 17th century onward, paralleling the formalization of Euclidean geometry and the rise of applied geometry in surveying and construction.
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💡 These words have similar meanings to "Perimeter" and can often be used interchangeably.
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Words that rhyme with "Perimeter"
-ter sounds
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