Truck Driving School Costs. The average length of PTDI-certified courses is four to six weeks, though courses may be as short as two weeks or as long as 12 weeks or more. The average cost of PTDI-certified courses is about $4,200, though the cost of truck driving school may be as low as $1,500 and as high as $10,000.
Orthopnea is the opposite of platypnea, shortness of breath that worsens when sitting or standing up.
Search also in: Web News Encyclopedia Images. sylph n 1 a slender graceful girl or young woman 2 any of a class of imaginary beings assumed to inhabit the air (C17: from New Latin sylphus, probably coined from Latin silva wood + Greek numphe nymph) â¦ sylphlike (less commonly) â¦ sylphic, sylphish, sylphy adj. sylph. n.