(highway) median; median strip; central reservation
separation of church and state
separation of Buddhism and Shintoism (government policy during the beginning of the Meiji period)
separation of farmers and samurai (system in effect from the Azuchi-Momoyama period until the Edo period)
centrifugation; centrifugal separation
separatists; secessionists
differential lung ventilation; differential pulmonary ventilation
separation of electrical power production from power distribution and transmission
(Mendel's) law of segregation
heavy media (liquid) separation
separation of church and state; separation of religious ritual and government administration
avulsion (e.g. removal of land by the action of water)
field-separator character
sequestrum; discerption; sequestral; sequestro-
separation of politics from economics