👉 Precrystalline is a term used in the field of materials science to describe a phase that has not yet undergone crystallization. It refers specifically to the first phase or state of matter that occurs before the substance reaches its final solid state, such as in the case of glass. In materials science, precrystalline phases are often referred to as "phase transitions" because they occur at a critical temperature where the material begins to change from one phase to another. Precrystall