noun Download 🔗Share A region of space that contains no matter. Examples : "The scientist studied the vacuum in space to understand how stars form. " space physics astronomy science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (plural only "vacuums") A vacuum cleaner. Examples : "My mother uses the vacuum to clean the living room floor every week. " utility device machine Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc. Examples : "a vacuum of 26 inches of mercury, or 13 pounds per square inch" physics condition science technology Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A spacetime having tensors of zero magnitude Examples : "The vacuum of space allows satellites to travel freely without air resistance. " physics space theory Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To clean (something) with a vacuum cleaner. Examples : "Before the party, I vacuumed the living room rug to remove the dust. " utility technology machine device work action Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To use a vacuum cleaner. Examples : "My mom vacuumed the living room before the guests arrived. " utility technology machine device Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To optimise a database or database table by physically removing deleted tuples. Examples : "The database administrator vacuumed the student records table to improve its performance. " computing technology Chat with AIVocabulary GamePractice Reading