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
Israeli statesman (born in Russia) who (as prime minister of Israel) negotiated a peace treaty with Anwar Sadat (then the president of Egypt) (1913-1992)
set in motion, cause to start; "The U.S. started a war in the Middle East"; "The Iraqis began hostilities"; "begin a new chapter in your life"
begin to speak or say; "Now listen, friends," he began
begin to speak, understand, read, and write a language; "She began Russian at an early age"; "We started French in fourth grade"
achieve or accomplish in the least degree, usually used in the negative; "This economic measure doesn't even begin to deal with the problem of inflation"; "You cannot even begin to understand the problem we had to deal with during the war"
begin an event that is implied and limited by the nature or inherent function of the direct object; "begin a cigar"; "She started the soup while it was still hot"; "We started physics in 10th grade"
have a beginning, in a temporal, spatial, or evaluative sense; "The DMZ begins right over the hill"; "The second movement begins after the Allegro"; "Prices for these homes start at $250,000"
have a beginning characterized in some specified way; "The novel begins with a murder"; "My property begins with the three maple trees"; "Her day begins with a workout"; "The semester begins with a convocation ceremony"
have a beginning, of a temporal event; "WW II began in 1939 when Hitler marched into Poland"; "The company's Asia tour begins next month"
be the first item or point, constitute the beginning or start, come first in a series; "The number `one' begins the sequence"; "A terrible murder begins the novel"; "The convocation ceremony officially begins the semester"