the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); "communications is his major field of study"
a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud; "his physician recommended psychoanalysis"
(biology) the field of science concerned with processes of communication and control (especially the comparison of these processes in biological and artificial systems)
the branch of quantum physics that accounts for matter at the atomic level; an extension of statistical mechanics based on quantum theory (especially the Pauli exclusion principle)
(chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles; "the ancient Greek philosophers Democritus and Epicurus held atomic theories of the universe"
(psychology) a theory that reduces all mental phenomena to simple elements (sensations and feelings) that form complex ideas by association
a statement that makes something comprehensible by describing the relevant structure or operation or circumstances etc.; "the explanation was very simple"; "I expected a brief account"
the act of explaining; making something plain or intelligible; "I heard his explanation of the accident"
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"
to believe especially on uncertain or tentative grounds; "Scientists supposed that large dinosaurs lived in swamps"
talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion; "We were speculating whether the President had to resign after the scandal"
invest at a risk; "I bought this house not because I want to live in it but to sell it later at a good price, so I am speculating"