caffeine
/ˈkæfiːn/
caffeine noun: an alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
Noun
caffeine (usually uncountable, plural caffeines)
- An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
- For example, 0.100 grams of caffeine yield by combustion, by weight, 0.180 grammes of carbonic acid.1839, Justus von Liebig, translated by William Gregory, Instructions for Organic Analysis, Glasgow, Scotland, United Kingdom: Richard Griffin & Company, page 35
- Hitherto, in consequence of its slight solubility, caffeine has been administered hypodermically only in very small doses ; in fact, at the ordinary temperature, it requires 93 parts of water to dissolve, so that a cubic centimeter would contain scarcely more than a centigram.1882 October, C. Tanret, “Soluble Salts of Caffeine”, in American Journal of Pharmacy, volume 45, page 495
caffeine meaning in Hindi, Tamil, Marathi and Urdu
caffeine in Hindi
- alkaloid found naturally in tea and coffee plants
- कैफ़ीन kaifīn, कैफीन kaiphīn
caffeine in Tamil
- காப்பி, தேநீரில் உள்ள மரவுப்புப் பொருள், கபேன், கபீன், கஃபீன், வெறியம்
caffeine in Marathi
- कॅफेन
caffeine in Urdu
- alkaloid found naturally in tea and coffee plants
- کَیفِین kaifīn
More languagesFewer languages
- caffeine in Bengali
- ক্যাফিন kêphin
- caffeine in Telugu
- కెఫిన్, కెఫీన్
- caffeine in Malayalam
- കഫീൻ
- caffeine in Kannada
- ಕಾಫಿ ಮತ್ತು ಟೀಯ ಸಸ್ಯಕ್ಷಾರ, ಉತ್ತೇಜನಕಾರಿ ಕ್ಷಾರಸತ್ವ
- caffeine in Punjabi
- ਕੈਫ਼ੀਨ
- caffeine in Gujarati
- કેફીન, કેફિન
- caffeine in Odia
- କେଫିନ୍, କ୍ଯ଼ାଫିନ୍
- caffeine in Nepali
- क्याफिन, क्याफेइन, क्याफीन
- caffeine in Arabic
- كَافِيِين kāfiyīn
- caffeine in Malay
- kafein
- caffeine in Indonesian
- kafein
- caffeine in Thai
- กาเฟอีน gaa-fee-iin, คาเฟอีน kaa-fee-iin
- caffeine in Vietnamese
- cafêin, cà phê tinh, caffein
- caffeine in Myanmar
- ကေဖိန်း kehpin:
Examples of caffeine in a sentence
- There's more caffeine in my coffee than in the coffee you get in most places.
- People who have addictive personalities are advised to avoid caffeine, alcohol and other drugs.
- My routine changed in February because I stopped alcohol, caffeine and dairy.
Forms of caffeine
| plural | caffeines |
|---|---|
| alternative form (dated) | caffein |
Origin of caffeine
Borrowed from French caféine, from café (“coffee”), or German Caffein, Kaffein (cp. Coffein, Koffein), from Kaffee (“coffee”) (cp. Kaffe, Koffee, Koffe), or Italian caffè (“coffee”) + -ine.
Words formed from caffeine
- apocaffeine
- cafedrine
- caffeinate
- caffeine dependence
- caffeine-free
- caffeineless
- caffeinelike
- caffeine up
- caffeine use disorder
- caffeinic
- caffeinism
- decaffeinate
- diethoxyhydroxycaffeine
- hydroxycaffeine
- hypocaffeine
- noncaffeine
- supercaffeine
Phrases with caffeine
Words that rhyme with caffeine
Questions about caffeine
- What does caffeine mean?
- Caffeine means an alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
- What is caffeine in Hindi?
- Caffeine in Hindi is कैफ़ीन (kaifīn), कैफीन (kaiphīn). See Caffeine meaning in Hindi.
- What part of speech is caffeine?
- Caffeine is a noun.
- How do you pronounce caffeine?
- Caffeine is pronounced /ˈkæfiːn/.
- What is the plural of caffeine?
- The plural of caffeine is caffeines.
Words near caffeine in the dictionary
Source and license
Adapted from Wiktionary: caffeine (page history and authors); caffeine (Tamil Wiktionary) (page history and authors); caffeine (Marathi, IndicTrans2 machine translation) (model and license); caffeine (Telugu, IndicTrans2 machine translation) (model and license); caffeine (Malayalam, IndicTrans2 machine translation) (model and license); caffeine (Kannada Wiktionary) (page history and authors); caffeine (Punjabi, IndicTrans2 machine translation) (model and license); caffeine (Gujarati, IndicTrans2 machine translation) (model and license); caffeine (Odia, IndicTrans2 machine translation) (model and license); caffeine (Nepali, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-caffeine.ogg.
Cite this entry: “caffeine.” Word.ws, https://word.ws/caffeine. Based on Wiktionary, CC BY-SA 4.0.