the theorem that a given infinite series converges if the absolute value of the ratio of the term succeeding the n th term to the n th term approaches a limit less than 1 as n increases without bound.
[rash-uh n, rey-shuh n] /ˈræʃ ən, ˈreɪ ʃən/ noun 1. a fixed allowance of provisions or food, especially for soldiers or sailors or for civilians during a shortage: a daily ration of meat and bread. 2. an allotted amount: They finally saved up enough gas rations for the trip. 3. rations. verb (used with object) […]
[rat-is-bon, -iz-] /ˈræt ɪsˌbɒn, -ɪz-/ noun 1. . /ˈrætɪzˌbɒn/ noun 1. the former English name for Regensburg
[rat] /ræt/ noun, (used with a plural verb) 1. a group of islands in SW Alaska, in the W Aleutian Islands.
[rat-ahyt] /ˈræt aɪt/ adjective 1. having a flat, unkeeled sternum, as an ostrich, cassowary, emu, or moa. noun 2. a bird having a ratite breastbone. /ˈrætaɪt/ adjective 1. (of flightless birds) having a breastbone that lacks a keel for the attachment of flight muscles 2. of or denoting the flightless birds, formerly classified as a […]