crys·tal·loid (kr s t -loid )n. A substance that in solution can pass through a semipermeable membrane and be crystallized, as distinguished from a colloid. adj. Resembling or having properties of a crystal or crystalloid. |
crystalloid
[kris′təloid]
Etymology: Gk, krystallos + eidos, form
a substance in a solution that can diffuse through a semipermeable membrane. Compare colloid.
crystalloid
1. resembling a crystal.
2. a noncolloid substance. Crystalloids form true solutions and therefore are capable of passing through a semipermeable membrane, as in dialysis. The physical opposite of a crystalloid is a colloid (3), which does not dissolve and does not form true solutions.
crystalloid particle
a matrix particle in a single membrane contained in a peroxisome, when viewed through an electron microscope. Called also nucleoid.
crystalloid solution
contains electrolytes and nonelectrolytes which will diffuse into all body fluid compartments. Examples are Ringer's solution and 5% dextrose in water.
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