How to pronounce "femtoseconds" in English
fem·to·se·conds
Hear native speakers say femtoseconds in context across real video clips
Linguistic Pronunciation Masterclass: “femtoseconds”
Phonetic mechanics, syllable architecture, and conversational cadence
Syllable Architecture & Stress Distribution
fem
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
to
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
se
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
conds
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
Keep the vowel length balanced, placing subtle emphasis on the root morpheme according to standard conversational rhythm.
Common Pronunciation Traps & Learner Mistakes
The Trap: Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels.
How Native Speakers Say It: Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).
Connected Speech & Natural Conversational Flow
When "femtoseconds" is followed by a word starting with a vowel, glide the final consonant into the opening vowel (e.g. "femtoseconds is" sounds like "femtoseconds-iz").
Maintain the stress-timed rhythm of English: compress unstressed syllables rapidly so the beat of "femtoseconds" aligns naturally with adjacent words.
Authentic Spoken Quotes from Native Video Context
“But, what we're talking about here is the femtoseconds range, because we want to see how nucleis are moving.”— StanfordWatch clip
“200 femtoseconds which means that in one day cpu of the largest blue jean not this one the”— Harvard UniversityWatch clip
“And we can enjoy that for a few femtoseconds before we evaporate.”— MIT OpenCourseWareWatch clip
“Much after this few femtosecond, as we approach five to 10 femtoseconds, we start to diverge.”— Native SpeakerWatch clip
“in femtoseconds, which is not -- is really quick.”— Native SpeakerWatch clip
“femtoseconds maybe, even attoseconds to turn on.”— Native SpeakerWatch clip
Practice Speaking “femtoseconds”
Listen to native pronunciation, record yourself repeating the sentence into your microphone, and receive real-time word-by-word accuracy scoring.
But, what we're talking about here is the femtoseconds range, because we want to see how nucleis are moving.
Hear it in context: “femtoseconds”
58 clipsThe English word “femtoseconds”. Phonologically, it consists of 4 syllables (fem · to · se · conds). Grammatically, “femtoseconds” functions as a noun. SayItVid indexes 58 authentic English video clips demonstrating how native speakers articulate “femtoseconds” in natural connected speech across American (US: 8 sampled), British (UK), and Australian (AUS) accents, including verified broadcasts from Stanford, Harvard University, MIT OpenCourseWare.
Spoken Video Transcripts & Contextual Quotes (5 Verified Clips)
- 🇺🇸 USStanfordClip #1 · @26:13
“Whether the Born-Oppenheimer approximation is valid or not is another question. But, what we're talking about here is the femtoseconds range, because we want to see how nucleis are moving. range, because we want to see how nucleis are moving.”
- 🇺🇸 USHarvard UniversityClip #2 · @80:23
“fact that we are multiscale our time step is of the order of 100 200 femtoseconds which means that in one day cpu of the largest blue jean not this one the which means that in one day cpu of the largest blue jean not this one the”
- 🇺🇸 USMIT OpenCourseWareClip #3 · @16:51
“and combines it, we get to have all that energy released. And we can enjoy that for a few femtoseconds before we evaporate. before we evaporate.”
- 🇺🇸 USClip #4 · @29:19
“We can compare to a handful of points and say, oh, these look broadly similar. Much after this few femtosecond, as we approach five to 10 femtoseconds, we start to diverge. Our prediction starts to diverge from our measurement.”
- 🇺🇸 USClip #5 · @11:14
“they repair themselves; they go zip and they repair the hole in femtoseconds, which is not -- is really quick. If you shine a light on them, they produce electricity.”
Definition & Meaning: “femtoseconds”
- An SI unit of time equal to 10⁻¹⁵ seconds. Symbol: fs
Example Sentences (3)
- “Holonyms: picosecond < nanosecond < microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < day < week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond < mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond”
- “But, what we're talking about here is the femtoseconds range, because we want to see how nucleis are moving.”
- “200 femtoseconds which means that in one day cpu of the largest blue jean not this one the”
Common Phrases & Collocations
Pronounce: “femtoseconds”
- Syllables:
- fem · to · se · conds
- Hear it in context
- femtoseconds
Words that Sound Identical (Homophones)
Unique Sound"femtoseconds" has no true homophones in standard English — there are no other words with identical pronunciation. Unlike sound-alike pairs like there / their or peace / piece, "femtoseconds" has a completely distinct phonetic identity.
Frequently asked questions about femtoseconds
How many syllables are in “femtoseconds”?
“femtoseconds” has 4 syllables: fem · to · se · conds.
What does “femtoseconds” mean?
An SI unit of time equal to 10⁻¹⁵ seconds. Symbol: fs
How can I hear “femtoseconds” used in real sentences?
This page has 58 real-world video examples of “femtoseconds” with synchronized subtitles. Use Previous / Next (or ← / → keys) to hear each one at the exact moment it is spoken.
What is the most common pronunciation mistake when saying “femtoseconds”?
Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels. Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).