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.
For the term formerly used in reference to compulsive drinking of alcohol, see Dipsomania. Polydipsia is excessive thirst or excess drinking. The word derives from the Greek ÏÎ¿Î»ÏÎ´Î¯ÏÎ¹Î¿Ï (poludÃ­psios) very thirsty, which is derived from ÏÎ¿Î»ÏÏ (polÃºs, much, many) + Î´Î¯ÏÎ± (dÃ­psa, thirst). Polydipsia is a nonspecific symptom in various medical disorders.