лог. disjunctive.
alternative, disjunctive, optional
(план) contingency plan; backup plan; backup arrangement; backup option; emergency operating procedure; alternative arrangements; alternative; emergency plan; alternative option; alternative course of action; alternative design
alternative order
alternative will
alternative writ
матем. альтернативный
"Life is far too important a thing ever to talk seriously about." Oscar Wilde
"Free speech carries with it some freedom to listen." Warren E. Burger
"Honor is not the exclusive property of any political party." Herbert Hoover
"Hitch your wagon to a star." Ralph Waldo Emerson