See Also: Tanganyika, Lake(dictionary)
Tanganyika, Lake(encyclopedia)
Tanganyika Oil Co.(finance)
rational(dictionary)
rational(2)(dictionary)
rational(1)(dictionary)
rational(3)(dictionary)
rational(medicine)
rational therapy(medicine)
Rational expectations(finance)

rational(1) (iou) and Tanganyika, Lake (sh)


rational(1) (iou)



rational adjective. LME.
[Latin rationalis, formed as RATIO noun: see -AL1.]
Having the faculty of reasoning; endowed with reason. LME.
J. Plamenatz Man as a self-conscious, rational..being who can make choices.
b. Hist. Designating (any of) an ancient class of physicians, who deduced their treatment of cases from General principles. Formerly also, (of a field of study, esp. psychology) employing or based on deduction from General principles. M16.
c. Using the faculty of reasoning; having sound judgement; sensible, sane. M17.
P. Lively What had got into Helen, normally as rational as himself.
Of, pertaining to, or based on reason or reasoning. LME.
A. Cross That..is such nonsense. I refuse to pay it the compliment of rational refutation. G. Sayer Jack often experienced a conflict between his intuitive and rational sides.
b. Existing (only) in the mind, not real. Only in 17.
Grammar. Of a conjunction: expressing a reason for a statement. LME-L17.
a. Math. (Of a number, quantity, etc.) expressible as a ratio of integers; (of an expression etc.) including no radical quantities which cannot be reduced to such a ratio. L16.
b. Physics. Of electrical units and equations: rationalized (see RATIONALIZE verb 2b). L19.
In accordance with reason; not foolish, absurd, or extreme. M17.
A. S. Neill In Australia, fear of a spider is rational, for a spider can be death-dealing.
Special collocations: rational dress Hist. a style of women's dress of the late 19th cent., characterized by the wearing of bloomers or knickerbockers. rational horizon: see HORIZON noun 3. rational mechanics: as deduced logically from first principles.
rationally adverb E17.
rationalness noun (now rare) M17.

Tanganyika, Lake (sh)




Lake, central Africa.

Located on the boundary between Tanzania and Congo (Kinshasa), it is the longest freshwater lake in the world, 410 mi (660 km) long, and the second deepest, 4,710 ft (1,436 m) deep. Fed by several rivers, it tends to be brackish. Oil palms and rice grow along its steep shores; hippopotamuses and crocodiles abound. It was first visited by Europeans, searching for the source of the Nile, in 1858.