normal saline

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normal saline

physiological saline solution.

normal saline

Physiologic saline solution, see there.

saline, physiological 

A 0.9% sterile solution of sodium chloride in water. This concentration of sodium chloride is considered approximately isotonic with the tears. It is used to store and rinse soft contact lenses, to irrigate the eye, etc. Syn. normal saline; NaCl 0.9%. See eyewash; irrigation; isotonic solution.


1. agreeing with the regular and established type. When said of a solution, it denotes one containing one chemical equivalent of solute per liter of solution; e.g. a 0.5 normal (0.5 N) solution has a concentration of 0.5 Eq/l. The use of standard units (Eq/l) is now generally preferred in pharmacy and clinical medicine although elsewhere molarity (M) is used.
2. in the context of infectious diseases, not immunized or infected.
3. statistically speaking, the values of a variable which follow a bell-shaped or Gaussian distribution.

normal distribution
see normal distribution.
normal limits
limits of the classification of 'normal' in the results of a test.
normal saline
contains 0.9% sodium chloride. Called also isotonic saline.