fourth ventricle n.
An irregular cavity that extends from the obex to a communication with the sylvian aqueduct and is enclosed between the cerebellum dorsally and the tegmentum of rhombencephalon ventrally.
noun 1. the republic established in France in 1945 and replaced by the Fifth Republic in 1958. noun 1. the fourth period of republican government in France or the republic itself (1945–58)
noun, Theater. 1. the imaginary wall of a box set, separating the actors from the audience.
noun 1. the world’s most poverty-stricken nations, especially in Africa and Asia, marked by very low GNP per capita and great dependence upon foreign economic aid. noun 1. the poorest countries in the most undeveloped parts of the world in Africa, Asia, and Latin America 2. the poorest people in developed countries
- Four-time loser
Related Terms three-time loser