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.
Diabetes insipidus. Diabetes insipidus (DI) is a condition characterized by excessive thirst and excretion of large amounts of severely dilute urine, with reduction of fluid intake having no effect on the concentration of the urine. There are different types of DI, each with a different set of causes.