5 syllables: pho, to, re, cep, tor. Stress on pho.
FOH-toh-ris-ep-tuhr
/ˈfoʊtoʊrɪˌsɛptər/
photoreceptor is pronounced FOH-toh-ris-ep-tuhr (/ˈfoʊtoʊrɪˌsɛptər/). It has five syllables (pho-to-re-cep-tor), with the stress on "pho". A photoreceptor is a cell or structure in a living organism that detects light and converts it into chemical or electrical signals, enabling vision or light-sensing functions. In biology and neuroscience, photoreceptors include rods and cones in the retina, which respond to different light intensities and wavelengths. The term combines the Greek photo- ‘light’ with receptor, ‘that which receives.’.
A photoreceptor is a cell or structure in a living organism that detects light and converts it into chemical or electrical signals, enabling vision or light-sensing functions. In biology and neuroscience, photoreceptors include rods and cones in the retina, which respond to different light intensities and wavelengths. The term combines the Greek photo- ‘light’ with receptor, ‘that which receives.’
"The photoreceptor cells in the retina are essential for low-light and color vision."
"Researchers studied how photoreceptors transduce photons into electrical signals."
"Certain mutations in photoreceptors can lead to retinal degenerative diseases."
Break it into pho-to-re-cep-tor. Primary stress falls on the REP syllable: pho-to-RE-cep-tor. IPA: US /ˌfoʊ.təˈrɛpˌtɔɹ/, UK /ˌfəʊ.təˈrɛpˌtɔː/, AU /ˌfɒ.təˈrɛpˌtɔː/. Start with ‘foh’ (like phone) or ‘foh-tuh’ with reduced middle syllables, then a clear ‘rep’ and a light ‘tor’ at the end. Mouth positions: lips unrounded for /oʊ/ or /əʊ/, tongue slightly raised for /ɹɛp/ depending on accent; end with a clear /tɔɹ/ or /tɔː/. Audio would help; use a dictionary with pronunciation or Forvo as reference.
Two frequent errors: (1) Stress misplaced on the wrong syllable, often saying pho-to-RE-cep-tor or pho-to-re-SEP-tor; (2) Vowel quality of /o/ and /ɜ/ in the middle segments varies, leading to an overly long /oʊ/ in the first syllable or conflating /ɪ/ with /ɛ/ in /ˈrɛp/. Correct by mapping syllables: pho-TO-RE-cep-tor, with /oʊ/ or /əʊ/ in first, /rɛp/ crisp and not reduced, and final /tɔɹ/.
In US English, you’ll hear /ˌfoʊ.təˈrɛpˌtɔɹ/, with rhotics and a clearer /oʊ/ in the first syllable and /ɔɹ/ at the end. UK speakers tend to reduce the middle vowel slightly and have non-rhotic endings, producing /ˌfəʊ.təˈrɛpˌtɔː/; AU tends toward /ˌfɒtəˈrɛpˌtɔː/ with broad vowel in first and non-rhotic final, and less rhoticity. The main differences: rhoticity, vowel quality of /oʊ/ vs /əʊ/ and the final /tɔɹ/ vs /tɔː/.
Difficulties arise from the combination of three multisyllabic segments, dense consonant cluster /tɔɹ/ at the end, and the mid syllable nucleus /rɛp/ which requires precise tongue control to avoid vowel intrusion. The sequence /təˈrɛp/ can trip the jaw and make the stressed syllable feel rushed if you’re not careful. Practice breaking into four syllables, then reassemble with steady tempo, ensuring the final consonant is crisp.
A unique feature is the two closed syllables around the stressed /rɛp/ where the lips and tongue momentarily coordinate to produce a crisp /ɹ/ plus the tense /ɛ/ vowel before /p/. The final /tɔɹ/ can be challenging because some speakers reduce /ɔ/ to /ə/ or merge with a /ɹ colored end; keep a clear /t/ and a strong rhotic cue in rhotic accents.
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The word photoreceptor derives from the combination of the Greek root photo- meaning ‘light’ and receptor meaning ‘that which takes or receives.’ The earliest forms appeared in scientific language of the 19th and 20th centuries as scientists formalized the study of light-detecting cells in biology. ‘Photo-’ as a productive prefix dates to classical Greek, used in terms like photocopy and photosynthesis. ‘Receptor’ comes from Latin receptus, past participle of recipere ‘to receive,’ and entered scientific vocabulary in the 19th century to describe cellular or molecular receivers of signals. The concept of light being converted into neural signals emerged with advances in physiology and neurobiology. In retinal science, the term photoreceptor solidified to refer to rod and cone cells responsible for light perception, distinguishing them from non-sensory retinal neurons. Over time, photoreceptor has broadened to describe any light-detecting receptor in organisms and even artificial sensors that mimic biological light detection.”,
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Words that rhyme with "photoreceptor"
-tor sounds
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