Also found in: Dictionary, Thesaurus, Encyclopedia.
Etymology: Gk, hypo, under, tonos, tone; L, sal, salt
a saline solution that is less than isotonic in strength.
hy·po·ton·ic sa·line(hī'pō-ton'ik sā'lēn)
Solution containing a lower concentration of sodium chloride than isotonic normal saline.
An aqueous solution of sodium chloride of less than 0.85%.
See also: saline