difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge; "the professor's lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"
sculpture suspended in midair whose delicately balanced parts can be set in motion by air currents
a port in southwestern Alabama on Mobile Bay
a river in southwestern Alabama; flows into Mobile Bay
capable of changing quickly from one state or condition to another; "a highly mobile face"
moving or capable of moving readily (especially from place to place); "a mobile missile system"; "the tongue is...the most mobile articulator"
having transportation available
(of groups of people) tending to travel and change settlements frequently; "a restless mobile society"; "the nomadic habits of the Bedouins"; "believed the profession of a peregrine typist would have a happy future"; "wandering tribes"
requiring more than usually expected or thought due; especially great patience and effort and skill; "found the job very demanding"; "a baby can be so demanding"