English dictionary

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English *noun*: atom
1.	atom (substance) (physics and chemistry) the smallest component of an element having the chemical properties of the element
		Broader (hypernym)	substance
		Narrower (hyponym)	carbon atom, free radical, hydrogen atom, isotope, monad, radical
		Part holonym	elementary particle, fundamental particle, nucleus
		Part meronym	chemical element, element, molecule
		Domain category	chemical science, chemistry, natural philosophy, physics

2.	atom (substance) (nontechnical usage) a tiny piece of anything
		Synonyms	corpuscle, molecule, mote, particle, speck
		Broader (hypernym)	material, stuff
		Narrower (hyponym)	chylomicron, flyspeck, grain, grinding, identification particle

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