Definition of "endoreic"

In the floor of the Rift Valley most of the streams are affected by the tectonic disturbances and are mostly fault-guided besides being endoreic.

1971, Francis F. Ojany, “Drainage Evolution in Kenya”, in S[imeon] H. Ominde, editor, Studies in East African Geography and Development, Berkeley, Los Angeles, Calif.: University of California Press, page 138, column 2

During the Pleistocene, the Ajusco closed the fluvial drainage to form the endoreic basin, which initiated sediment accumulation that eventually covered more than half of the valley [...].

2002, Guadalupe de la Lanza Espino, José Luis García-Calderón, “Historical Summary of the Geology, Climate, Hydrology, Culture, and Natural Resource Utilization in the Basin of Mexico”, in Mark E. Fenn, L. I. de Bauer, Tomás Hernández-Tejeda, editors, Urban Air Pollution and Forests: Resources at Risk in the Mexico City Air Basin (Ecological Studies; 156), New York, N.Y.: Springer-Verlag, page 5