1 Hydrogen is the most abundant element in the universe. 2  Hydrogen isn't common in a pure form on Earth, but is mostly found as part of water. 3  Hydrogen is the main fuel of stars and the only fuel for red dwarfs. 4  The whole universe is thought to have been formed by a Hydrogen nucleus.
Noun. 1. hindlimb-a posterior appendage such as a leg or the homologous structure in other animals. hind limb. hind leg-the back limb of a quadruped. limb-one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper. 1  Facebook.
The 2 bones of the lower leg are the tibia and fibula. The tibia is the inside bone (same side as your big toe) and the fibula is the outside lower leg bone.The femur is the â¦ thigh bone.6 people found this useful. The patella: kneecap. 2  The fibula: the shorter of two bones in the lower leg, to the outside and behind the tibia. 3  The tibia: the longer bone in the lower leg, connected to both ankle and knee (the fibula is only in the ankle, and connected to the back of this).