crystalloid

A crystalloid solution is used in medical infusions.

Definition

1. Noun:

   • A substance that can crystallize: In chemistry and physics, a "crystalloid" is a substance that, when dissolved in a solvent, can form crystals upon evaporation or cooling. It is typically a small molecule or ion that diffuses readily through a semipermeable membrane.
   • A type of solution: In medicine, a "crystalloid" refers to a solution containing such substances (e.g., saline or Ringer's lactate) used for intravenous fluid replacement.

2. Adjective:

   • Having the form or nature of a crystal: Describing something that resembles a crystal in structure or appearance, but is not necessarily a true crystal.

Usage Examples

• Noun:

  • In the laboratory, the chemist identified the precipitate as a crystalloid. (The solid formed was a substance capable of forming crystals.)
  • The patient received a crystalloid solution to restore fluid balance after surgery. (A saline-based intravenous fluid was administered.)

• Adjective:

  • The mineral had a crystalloid structure under the microscope. (It appeared crystal-like in form.)

Advanced Usage

• "Crystalloid versus colloid": A common distinction in medicine between crystalloid solutions (e.g., saline) and colloid solutions (e.g., albumin), based on their ability to cross capillary membranes.

  • The debate over crystalloid versus colloid resuscitation continues in emergency medicine. (The choice between these two types of fluids for treating shock is still debated.)

• "Crystalloid osmotic pressure": The osmotic pressure exerted by crystalloids in a solution, which affects fluid movement across membranes.

  • Crystalloid osmotic pressure is lower than that of colloids, leading to faster redistribution. (Crystalloids have a weaker effect on pulling water into the bloodstream.)

Variants and Related Words

• Crystalline (adj): having the structure and form of a crystal; composed of crystals.

  • The sugar formed a crystalline layer on the bottom of the jar. (It solidified into a crystal-like layer.)

• Crystallize (verb): to form into crystals; to become definite in form.

  • The solution will crystallize if left to cool slowly. (It will turn into crystals.)

Synonyms

• Crystal-like: resembling a crystal in appearance.
• Microcrystalline: composed of very small crystals (often used in geology).

Phrasal Verbs

Related Idioms