3 syllables: Pe, ta, byte. Stress on Pe.
PET-uh-beyet
/ˈpɛtəˌbaɪt/
Petabyte is pronounced PET-uh-beyet (/ˈpɛtəˌbaɪt/). It has three syllables (Pe-ta-byte), with the stress on "Pe". Petabyte is a unit of digital information equal to 1,000,000,000,000,000 bytes (10^15) in decimal notation, or 2^50 bytes in binary notation. It’s used to measure extremely large data storage capacities. In everyday tech contexts, it signals very large-scale storage or data transfer, often in data centers or cloud infrastructures.
nounPetabyte is a unit of digital information equal to 1,000,000,000,000,000 bytes (10^15) in decimal notation, or 2^50 bytes in binary notation. It’s used to measure extremely large data storage capacities. In everyday tech contexts, it signals very large-scale storage or data transfer, often in data centers or cloud infrastructures.
"The data center announced it will scale from petabytes to exabytes over the next five years."
"A single petabyte of storage would hold roughly 250 million high-definition movies."
"Researchers archived the genome dataset on petabytes of cloud storage."
US/UK/AU pronunciation is /ˈpeˌtaɪˌbaɪt/. The main stress is on the first syllable 'PE,' with a secondary rise on 'byte.' In careful speech, you’ll articulate as PE-tuh-bite in US/UK, with a clear /baɪt/ final. Audio resources can help: you’ll hear the first syllable opened to /ˈpe/ or /ˈpiː/ depending on accent, followed by /teɪ/ or /tɪ/ before /baɪt/. Practice by emphasizing the two-word rhythm: PE-ta-byte.
People often misplace stress, saying pe-TA-byte or pe-TAH-byte. Another error is merging the middle sequence into /te-baɪ/ without a clear boundary, leading to /petabait/ or /peˈtæbaɪt/ in some accents. Correction: keep two distinct word segments: /ˈpeˌtaɪ/ and /baɪt/, with a subtle pause between syllables and a light schwa on the second syllable as needed. Aim for PE-TAI-BYTE with consistent vowel quality.
US: /ˈpeɪtɪˌbaɪt/ or /ˈpeˌtaɪˌbaɪt/ with a tighter second syllable; UK: /ˈpeɪtəˌbaɪt/ or /ˈpeːtəˌbaɪt/ with a slightly rounded /ə/ in the second syllable; AU: /ˈpeːtəˌbaɪt/ with broader vowel height in the first syllable. The rhotic/non-rhotic distinction affects the base vowel length and rhoticity is generally minimal in UK/AU. Focus on preserving /baɪt/ and the light /tə/ or /tɪ/ depending on locale.
The difficulty comes from the transition between the first long vowel in /peɪ/ or /pe/ and the diphthong in /baɪt/, plus the two adjacent consonants /t/ and /b/ in quick speech. The middle syllable can blur, especially when spoken quickly: /ˈpeɪtəˌbaɪt/ vs /ˈpeɪˌtəbaɪt/. Your challenge is crisp syllable boundaries and accurate vowel shifts. Practice with isolated segments and then merge into word-level rhythm.
A common, subtle point is the optional schwa in the second syllable in rapid speech. Some speakers reduce /tə/ to a schwa or /tɪ/ depending on speed and accent, giving /ˈpeɪˌtaɪt/ or /ˈpeˌtəˌbaɪt/. Be explicit in careful speech, then relax in fast contexts, but always preserve the final /baɪt/ to avoid mishearing as just 'byte.'
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US/UK/AU differences: • US: tend to prefer /ˈpeɪtəˌbaɪt/ with a clear /eɪ/ in the first syllable and a rhotic-ish neutral /ə/ in the middle; keep final /baɪt/ bright. • UK: often /ˈpeɪtəˌbaɪt/, slightly shorter second syllable and less vowel depth in /ə/; more clipped rhythm in some dialects. • AU: ~/ˈpeːtəˌbaɪt/ or /ˈpeːtɹəˌbaɪt/ with broader vowel in the initial syllable; less rhoticity and more lenition in the middle. All share the final /baɪt/. IPA references: US /ˈpeɪtəˌbaɪt/, UK /ˈpeɪtəˌbaɪt/, AU /ˈpeːtəˌbaɪt/; ensure you hear the full /baɪt/ trill of the final consonants.
The term petabyte is built from the prefix peta-, derived from the Greek pente (five) via the SI prefix sequence used for data storage and measurement. Peta- denotes 10^15 in decimal usage (1,000,000,000,000,000 bytes) and aligns with binary usage as 2^50 bytes in some contexts, though the binary standard often uses the tebibyte for 2^40 bytes and the pebibyte (PiB) for 2^50 bytes to avoid ambiguity. The suffix -byte is a measure unit for digital information. The first formal use of petabyte emerged in late 20th-century computing as storage capacities climbed beyond terabytes. The convention of using peta- followed by “byte” mirrors the established pattern of kilobyte, megabyte, gigabyte, and terabyte, and reflects the growth of data-centric technologies, big data, and cloud storage. Over time, as data volumes expanded, petabyte became a practical shorthand in both industry and journalism to convey vast, scalable storage, particularly in data centers, backup archives, and scientific datasets.
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Words that rhyme with "Petabyte"
-ght sounds
-ite sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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