3 syllables: A, que, ous. Stress on A.
AY-kwee-uhs
/ˈeɪkwiəs/
Aqueous is pronounced AY-kwee-uhs (/ˈeɪkwiəs/). It has three syllables (A-que-ous), with the stress on "A". Aqueous is pronounced as a two-syllable word meaning 'relating to, containing, or dissolved in water.' In science and medicine it often describes solutions or fluids (e.g., aqueous humor). The term typically appears in formal or technical contexts and is often assigned to adjectives, though ‘aqueous’ can function attributively or predicatively in specialized writing.
nounAqueous is pronounced as a two-syllable word meaning 'relating to, containing, or dissolved in water.' In science and medicine it often describes solutions or fluids (e.g., aqueous humor). The term typically appears in formal or technical contexts and is often assigned to adjectives, though ‘aqueous’ can function attributively or predicatively in specialized writing.
How to Pronounce Aqueous
"The aqueous solution turned cloudy after the reactant was added."
"Biologists studied the aqueous environment surrounding the cells."
"Aqueous humor plays a vital role in maintaining intraocular pressure."
Say it as /ˈæ.kwi.əs/ in US/UK/AU. Begin with the short 'a' as in 'cat,' then a rounded /kw/ onset, followed by a weak schwa in the second syllable and a final light /əs/. The stress is on the first syllable. Visualize saying ‘A-kwie-us’ with a crisp /kw/ blend and a gentle, unstressed final syllable. Audio references include standard dictionaries and pronunciation platforms; try repeating after a native speaker for accuracy.
Common errors: (1) Misplacing stress on the second syllable, producing /æˈkwi.əs/. (2) Over-rolling the /r/ equivalent or adding an extra syllable. (3) Slurring the /kw/ into a plain /k/ or /w/ cluster, giving /ˈæ.kwi.əs/ instead of a tight /kw/. Correction tips: practice the /kw/ as a single onset, keep the first vowel short /æ/, and maintain a weak final /əs/ with a short, relaxed tongue. Listening to native previews and practicing with minimal pairs helps settle the rhythm.
US and UK both favor /ˈæ.kwi.əs/ with vowel qualities that lean toward a short /æ/ and a clear /kw/. US rhotics don’t affect the word itself since it lacks /r/. Australian English shares /ˈæ.kwi.əs/ but can have slightly longer vowels and a more centralized /ə/. The main variance is vowel length and the quality of /æ/ vs. more open front vowel adjustments; the /kw/ remains a tight, distinctive cluster in all three.
The difficulty lies in the tight /kw/ consonant cluster following a short /æ/ vowel, plus a subtle, unstressed final /əs/. Many speakers also slow down after the first syllable or misplace the stress. Focused practice on the /kw/ onset and keeping the final schwa weak but audible helps maintain natural rhythm. IPA cues: /ˈæ.kwi.əs/; ensure the tongue makes a brief contact for /k/ and then glides into /w/ in a single motion.
In connected speech, you’ll often reduce the final /əs/ slightly into a softer /əs/ or even a muted /s/ in very fast speech, while keeping the /æ/ of the first syllable prominent. The /kw/ should stay compact and not split into /k/ and /w/. Practicing at natural speeds in sentences will help you maintain the same rhythm as academic narration.
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Aqueous derives from the Latin word aqua, meaning ‘water,’ combined with the suffix -eus, from the Latin -eus meaning ‘of or pertaining to.’ The term entered English through Late Latin as aquosus, then into Old French as aqueux before appearing in English scientific usage by the 17th century. The root aqua evolved into many water-related terms (aquarium, aquatic, aquifer). In modern scientific writing, aqueous denotes solutions or solvents in which water is the solvent, distinguishing from organic or other non-aqueous media. The word’s core meaning—relating to water—remains constant, but its application broadened from general descriptions to precise chemical and biological contexts as the scientific lexicon expanded. First known use in English appears in the 16th–17th centuries in translations and medical texts, evolving with chemistry’s rise as a formal discipline. Today, aqueous is a staple in chemistry, biology, and ophthalmology (aqueous humor).
💡 Etymology tip: Understanding word origins can help you remember pronunciation patterns and recognize related words in the same language family.
Help others use "Aqueous" correctly by contributing grammar tips, common mistakes, and context guidance.
💡 These words have similar meanings to "Aqueous" and can often be used interchangeably.
🔄 These words have opposite meanings to "Aqueous" and show contrast in usage.
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Words that rhyme with "Aqueous"
-ous sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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