2 syllables: ox, ides. Stress on ox.
/ˈɑˌksaɪdz/
Say it backOxides are chemical compounds in which oxygen is bonded to another element. The term covers a broad class of substances, from metal oxides like rust (iron oxide) to nonmetals such as carbon dioxide. The word often appears in scientific contexts and is used both as a plural noun and in adjectival phrases describing oxide compounds.
"The oxides of nitrogen contribute to smog formation."
"Iron reacts with oxygen to form iron oxides on the surface."
"Researchers study the catalytic properties of metal oxides."
You say OK-sahydz with stress on the first syllable. IPA: US/UK/AU: ˈɒksaɪdz in UK and AU, ˈɑksɪdz or ˈɒksaɪdz in careful US pronunciation. The second syllable begins with the long I sound /aɪ/ followed by /dz/ (voiced alveolar affricate). Be sure to release the /ks/ cluster clearly and finish with a light /dz/.
Common errors include shortening the second syllable to /ɪdz/ or misplacing the /ks/ cluster, saying /ˈɒk sɪdz/ with a blurred /ks/ sequence, and blending the final /dz/ into an /z/ or /d/ too abruptly. Correct by isolating the /ks/ in the middle and ensuring the /aɪ/ is a clear long sound before the /dz/; practice with word pairs like ‘oxides’ vs ‘oxidize’ to feel the shift.
In US English you’ll often hear /ˈɑksɪdz/ with a shorter /a/ in the first syllable and a slightly softened final /dz/. UK English tends to keep a crisper /ɒ/ in the first syllable and a more pronounced /dz/; AU follows a similar pattern to UK but with subtly different vowel quality, leaning toward /ɒ/ and less rhotic influence. The main distinction is vowel quality rather than stress, with preserved first-syllable primary stress in all three.
Because it packs a tense, fronted /ɒ/ or /ɑ/ vowel in the first syllable plus a crisp, voiced alveolar affricate /dz/ at the end. The /ks/ cluster in the middle must be clean and not blended with surrounding vowels; the /ɪ/ vs /aɪ/ distinction in the second syllable can be subtle in fast speech, leading to mispronunciations like /ˈɑkˌsɪdz/ or /ˈɒksiːdz/. Focus on separating sounds clearly.
The word contains a clear /aɪ/ diphthong in the second syllable, unlike many similar-structured words that end with a simple /ɪz/ or /iz/. Pronounce the second syllable as /aɪdz/ with a crisp closing /dz/. Another unique feature is the identical stress pattern with the initial syllable carrying primary stress, which affects rhythm when using it in phrases like ‘metal oxides’ or ‘oxic oxide layer’ where pace matters.
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Oxide comes from the Latin oxĭsum, meaning ‘acid oxide’ or ‘oxide’, with the suffix -ide indicating a chemical compound. The broader English use derives from Medieval Latin oxide, from Greek oksis ‘sharp, acid, oxygen’ related to the chemical notion of oxygen-releasing substances. The root oks- traces to the Greek oxys meaning ‘sharp’ or ‘acid’, reflecting early chemical theories about oxygen-containing substances. The modern chemical sense emerged in early chemistry as scientists distinguished simple oxides of elements from other compounds. The form oxide, as a standalone noun for the compound, first appears in English in the 17th century, aligning with the era’s explosive growth in inorganic chemistry. Over time, the plural oxides gained traction as the term described a large and diverse category, including metal oxides (Fe2O3, Al2O3) and nonmetal oxides (CO2, SO3). In contemporary usage, oxide often appears in both nouns and adjectives (oxide layer, oxide film) in scientific literature, manufacturing, and environmental science. The word’s evolution mirrors advances in oxidation chemistry, materials science, and catalysis, where oxides play a foundational role across corrosion, semiconductors, and energy technologies.
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💡 These words have similar meanings to "oxides" and can often be used interchangeably.
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Words that rhyme with "oxides"
-xes sounds
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