BDC style reticles can look very different from one scope to the next. The reticle on the left is from a Bushnell 1-4x24mm AR optic and the reticle on the right is a Bushnell proprietary âDOA 600â reticle from one of their 3-9x optics.
Freebase(0.00 / 0 votes)Rate this definition: Thirst is the craving for fluids, resulting in the basic instinct of animals to drink. It is an essential mechanism involved in fluid balance. It arises from a lack of fluids or an increase in the concentration of certain osmolites, such as salt.
Excessive thirst is hard to define. People normally drink varying amounts of liquid depending on their activity level and the temperature indoors and out. There are two main medical conditions that should be considered if you feel constantly thirsty: