To pronounce "isotopes", say IS-ot-op-es — 4 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
isotopes
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4
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8
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IS-ot-op-es
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"isotopes" has 4 syllables: is-ot-op-es. It rhymes with lopes and scopes, if that helps it stick.
noun
Practicing rhymes trains the same ending sounds.
"Isotopes" has 4 syllables: is · ot · op · es.
Isotopes: Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. As a consequence, atoms of isotopes will have the same atomic number but a different mass number.
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