4 syllables: Ri, bo, fla, vin. Stress on fla.
reye-boh-FLAY-vin
/ˌɹaɪ boʊ ˈfleɪ vɪn/
Riboflavin is pronounced reye-boh-FLAY-vin (/ˌɹaɪ boʊ ˈfleɪ vɪn/). It has four syllables (Ri-bo-fla-vin), with the stress on "fla". Riboflavin is a water-soluble B vitamin (B2) essential for energy metabolism and the metabolism of fats, carbohydrates, and proteins. It also supports cellular function, growth, and the development of the skin and mucous membranes. In foods and supplements, riboflavin appears as a yellow-orange, heat-stable compound important for overall health.
nounRiboflavin is a water-soluble B vitamin (B2) essential for energy metabolism and the metabolism of fats, carbohydrates, and proteins. It also supports cellular function, growth, and the development of the skin and mucous membranes. In foods and supplements, riboflavin appears as a yellow-orange, heat-stable compound important for overall health.
"A dietary sponsor provided riboflavin supplements to ensure adequate vitamin B2 intake for participants."
"Doctors advised riboflavin-rich foods to support energy production in patients with certain metabolic conditions."
"Riboflavin deficiency is rare in developed countries but can occur with poor diet or certain illnesses."
Riboflavin is pronounced ri-BOF-la-vin with the primary stress on the second syllable, 'BOF'. IPA (US/UK): /ˌrɪ.boʊˈfleɪ.vɪn/ or /ˌɹaɪ.boʊˈfleɪ.vɪn/ depending on speaker; rhythm is three syllables after the initial 'ri-' and the middle 'flay' is a single syllable with a clear long 'a' sound. Yah, you’ll want that 'fleɪ' as a single, emphasized unit. For Australian: /ˌɹiː.boʊˈfleɪ.vɪn/. Audio reference: you can compare to recorded pronunciations on Pronounce or Forvo by searching 'riboflavin'.
Common errors: (1) stressing the wrong syllable, often stressing the first 'ri-' or the final '-vin' instead of the middle '-fleɪ-'. Correction: place primary stress on the 'fleɪ' syllable. (2) pronouncing 'ri-' too short or unstressed; correct by using a light, quick initial syllable followed by the strong 'fleɪ' with a clear vowel quality. (3) pronouncing 'v' as a 'w' or soft 'b' sound; keep a voiced labiodental fricative for 'v'. Practice with slow, deliberate articulation: ri-BOF-la-vin.
US vs UK vs AU: US tends to /ˌrɪ.boʊˈfleɪ.vɪn/, UK often /ˌraɪ.bəˈfleɪ.vɪn/ with slightly reduced 'ri' and a softer 'ri' in some speakers; AU is similar to US but vowel qualities vary; Australian speakers may have a more centralized vowel in the first syllable and a stronger 'i' in the final syllable. Across all, the main stress remains on the second syllable's 'fleɪ', but the preceding vowel can shift slightly: US 'ri' as /rɪ/ or /ɹɪ/, UK may be /raɪ/ or /rəˈ/?; listen to local pronunciations to model the exact vowel.
The difficulty centers on the three-syllable structure with an unfamiliar root 'ri-' and the long 'fleɪ' sound. The 'ri' can be reduced to a quick, lax vowel, while 'fleɪ' has a clear, long vowel; the -vin ending can be misheard as 'vin' vs 'vinn' depending on speech rate. The combination of three consecutive syllables with a mid-stress and the 'v' sound in 've' requires careful voicing and lip posture; practice with slowed articulation and gradually increase speed.
No letters are silent in standard pronunciation; every letter contributes to syllables Ri-bo-fla-vin. The tricky part is correctly articulating the diphthong in 'fleɪ' and maintaining the mid-stress pattern. The global stress pattern is strong on 'fleɪ', so ensure that syllable carries the pulse of the word when you speak quickly.
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Riboflavin derives from the latinized combination of ribose and flavin. The word ribo- comes from ribose, a sugar unit; flavin comes from flavus, the Latin for yellow, referring to the yellow color of the compound. The term riboflavin was first used in the early 20th century as scientists isolated it as a distinct component of the vitamin B complex. It is linked to the broader discovery of water-soluble vitamins and their roles in metabolism. The compound itself is a ribonucleotide derivative of lumazine and forms part of the flavoprotein family that participates in redox reactions. Since its discovery, riboflavin has been studied for its role in energy production, cellular respiration, and antioxidant functions, and it is commonly labeled as vitamin B2 on nutrition labels.
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💡 These words have similar meanings to "Riboflavin" and can often be used interchangeably.
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Words that rhyme with "Riboflavin"
-ven sounds
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