An antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.n antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.
Hip is the region below the waist and above the thigh. It includes the buttocks (which only refers to the back muscle). It includes the flesh and internal anatomy of this area especially the bones, hence you have hip joints.
Medical Definition of THIGH. 1. : the proximal segment of the vertebrate hind or lower limb extending from the hip to the knee and supported by a single large boneâcompare femur 1. 2. : the segment of the leg immediately distal to the thigh in a bird or in a quadruped in which the true thigh is obscured.: the proximal segment of the vertebrate hind or lower limb extending from the hip to the knee b: the segment of the leg immediately distal to the thigh in a bird or in a quadruped in which the true thigh is obscured c: the femur of an insect.