consisting of or containing or of the nature of crystals; "granite is crystalline"
transmitting light; able to be seen through with clarity; "the cold crystalline water of melted snow"; "crystal clear skies"; "could see the sand on the bottom of the limpid pool"; "lucid air"; "a pellucid brook"; "transparent crystal"
distinctly or sharply outlined; "crystalline sharpness of outline"- John Buchan
clearly characterized or delimited; "lost in a maze of words both defined and undefined"; "each child has clearly defined duties"
clearly defined; "I have no formed opinion about the chances of success"
showing clearly the outline or profile or boundary; "hills defined against the evening sky"; "the setting sun showed the outlined figure of a man standing on the hill"
the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes
a center of activity or interest or commerce or transportation; a focal point around which events revolve; "the playground is the hub of parental supervision"; "the airport is the economic hub of the area"