any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)

any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)

an angle less than 90 degrees but more than 0 degrees

an angle less than 90 degrees but more than 0 degrees

an angle less than 90 degrees but more than 0 degrees

a triangle whose interior angles are all acute

schizophrenia of abrupt onset and relatively short duration (a few weeks or months)

pyelonephritis resulting from the spread of a bladder infection

any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)

any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)