Capacity refers to the maximum amount that something can contain or the ability or power to perform a task. It also denotes suitability or potential in a given situation and can describe capacity in terms of resources, equipment, or organizational capability. In everyday use, it conveys both physical capacity and the figurative capacity to handle responsibilities, roles, or ideas.
"The tank has a capacity of 50 liters."
"Her capacity for learning new languages impressed her teachers."
"The conference room's seating capacity is 120 people."
"The company is expanding its production capacity to meet demand."
Capacity comes from the Old French capacite, from Latin capacitas, from capax, meaning ‘capable, holding much,’ from capere, ‘to take, seize.’ The term entered English in the late Middle Ages and evolved through the sense of ‘the ability to hold or contain’ to its modern breadth of meanings: physical space (volume), mental or functional power (capability), and capacity in organizational or legal contexts. Early uses related to storage or container size, and as science and business formalized terms like production capacity or capacity planning, the word broadened to denote potential and capability across disciplines. The Latin root capere persists in related words like capable, capacity, capacious, and capacitor, with shifts in sense often tied to the idea of taking hold or containing a quantity or capability. First known uses in English date to the 14th–15th centuries, with gradual semantic expansion in the Renaissance as science and administration demanded terminology for both space and ability. In modern usage, capacity remains central to engineering, logistics, psychology, and management—capturing both measurable limits and latent capability.
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💡 These words have similar meanings to "Capacity" and can often be used interchangeably.
🔄 These words have opposite meanings to "Capacity" and show contrast in usage.
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Words that rhyme with "Capacity"
-no) sounds
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Pronounce it as /ˈkæp.ə.sɪ.ti/. The primary stress is on the first syllable: KA-pə-sit-ee. Start with /k/ by closing the back of the tongue to the soft palate, then /æ/ as in 'cat'. The middle syllable /ə/ is a schwa, followed by /sɪ/ as in 'sit', then /ti/ as in 'tea'. Think 4 clear beats: KA-pə-SI-tee. For reference, listen to native speakers in a short clip or dictionary audio; you’ll hear the four-syllable cadence with even rhythm.
Common errors include misplacing stress (saying ca-PA-ci-ty) and reducing the second syllable too much (KA-puh-CT ee). Another frequent issue is pronouncing /sɪ/ as /siː/ or blending /ti/ too tightly with /iː/, making it ‘capacity’ with a long first vowel. Correct by maintaining steady four-syllable rhythm, using a distinct schwa in the second syllable, and enunciating the final /ti/ clearly. Practice with slow, exaggerated enunciation, then normalize.
In US, UK, and AU, the core /ˈkæp.ə.sɪ.ti/ pattern remains, but vowel quality shifts slightly. US tends to hold the /æ/ as a lax, flat vowel and the /ɪ/ a bit shorter. UK often shows a crisper /ˈkæp.ə.sɪ.ti/ with more clipped /ˈtɪ/ at times and less rhoticity difference here since capacity is not rhotic-affected; AU mirrors US but may have a slightly broader vowel in /æ/ and a lighter /i/ at the end. In all, the stress remains on the first syllable; the differences are subtle and mostly in vowel height and duration rather than consonant changes.
Two main challenges: the multi-syllable structure with four syllables in quick speech, and the cluster /kp/ at the start of the word since /k/ meets /p/ smoothly in rapid speech. The /æ/ vowel in the first syllable also needs accuracy to avoid sounding like /eɪ/ or /e/. Practicing the sequence KA-pə-SI-tee helps you lock the rhythm. Pay attention to the central schwa in the second syllable and ensure the final /ti/ is crisp, not blended with the preceding /ɪ/.
Yes, the second syllable is typically a reduced vowel, a schwa /ə/. In careful pronunciation, you’ll hear a relaxed jaw and a quick, neutral vowel sound. Avoid over-pronouncing the second syllable; keep it short, matching the rhythm of the surrounding syllables KA-pə-SI-tee. In careful speech, you might stretch it slightly in slower contexts, but in natural speech, the schwa remains brief and unstressed.
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