a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena; "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices"
a proposal intended to explain certain facts or observations
a day on which work is suspended by law or custom; "no mail is delivered on federal holidays"; "it's a good thing that New Year's was a holiday because everyone had a hangover"
the creation of beautiful or significant things; "art does not need to be innovative to be good"; "I was never any good at art"; "he said that architecture is the art of wasting space beautifully"
the products of human creativity; works of art collectively; "an art exhibition"; "a fine collection of art"
a superior skill that you can learn by study and practice and observation; "the art of conversation"; "it's quite an art"
the impression that something is present; "he felt the presence of an evil force"
the immediate proximity of someone or something; "she blushed in his presence"; "he sensed the presence of danger"; "he was well behaved in front of company"
an invisible spiritual being felt to be nearby
the state of being present; current existence; "he tested for the presence of radon"