Bottle with an enhanced bottom

A bottle made of thermoplastic polymer, having an interior obtained by blow molding an injection-molded preform, comprising from bottom to top along a vertical axis Z of the bottle resting upright on a horizontal plane support in a contact plane XY, a bottom, a body and a neck, a spatial frame of reference of this bottle being an orthonormal system of axes [XYZ] with origin O,

• the bottom comprising successively and in a centrifugal direction:
• a dome with axis Z extending toward the interior of the bottle,
• a coronal arch extending toward the interior of the bottle,
• an annular seat intended to be in contact with a plane support in the contact plane XY on which the bottle is able to rest in an upright position,
• a lateral wall extending in a non-horizontal direction as far as the body at a height H of 15 mm with reference to a height h0 situated at the plane support of the annular seat, a junction between the lateral wall and the annular seat constituting an annular edge,
• at least three main grooves extending radially from the dome to the lateral wall, defining arch portions between them on the coronal arch,
• at least three secondary grooves disposed between the main grooves, each extending radially between an end Ev in an arch portion and a peripheral end Ep in the lateral wall,
• wherein:
• a ratio Mf/Vuf, in which Mf is the weight of the bottom and Vuf is a usable volume of the bottom, is less than or equal to 0.050 g/mL,
• a ratio Ødo/Hdo, in which Ødo is the diameter of the dome at its base and Hdo is its apex height along the axis Z or an axis parallel to Z, is greater than or equal to 4.4.