AN ELONGATE AEROSOL-GENERATING DEVICE (100, 1000) HAS AT LEAST A PORTION OF ITS TRANSVERSE EXTERNAL CROSS-SECTION DEFINED BY A SHAPE HAVING AT LEAST 5 SIDES. THE SHAPE MAY BE POLYGONAL. THE CROSS-SECTIONAL SHAPE OF THE DEVICE CONFERS STABILITY AGAINST ROLLING. THE ELONGATE AEROSOL-GENERATING DEVICE MAY COMPRISE A SUBSTRATE RECEIVING CAVITY (302) ADAPTED TO RECEIVE AN AEROSOL-FORMING SUBSTRATE TO FORM AN AEROSOL, A HEATING ELEMENT, AND A POWER SUPPLY (506) ADAPTED TO PROVIDE POWER TO THE HEATING ELEMENT. IN SOME EMBODIMENTS THE EXTERNAL SHAPE OF THE AEROSOL-GENERATING DEVICE MAY BE DEFINED BY A HOUSING HAVING AT LEAST TWO SEPARABLE PORTIONS. IN SOME EMBODIMENTS THE EXTERNAL SHAPE MAY BE DEFINED BY A POLYGON HAVING CONVEXLY CURVED FACES TO MINIMISE PERCEIVED MISALIGNMENTS BETWEEN ADJACENT HOUSING PORTIONS. FIG. 1
