crystal nucleus
cloud condensation nucleus
seed crystal

Growth proceeds from a small crystal nucleus which develops into a fibril.

Another important consequence of the molecular orientation is that it induces the formation of many crystal nuclei.

Here he supervised research students concentrating on twinning, intermetallics and the formation of crystal nuclei during recrystallisation.

Crystal nuclei (seeds) tend to form more readily if the honey is disturbed, by stirring, shaking or agitating, rather than if left at rest.

A new method based on crystalloluminescence measurements is proposed for the determination of the critical size of the crystal nucleus."

"There is a time lag between the achievement of supersaturation in a solution and the appearance of crystalloluminescence flashes from crystal nuclei.

Mashuk is a laccolith with a crystal nucleus, buried under sedimentary rock (limestone and marl of Upper Cretaceous and Palaeogene).

The abstract of an article by B. P. Chandra, V. Kalia and S. C. Datt of Rani Durgavati University (Jabulpur, India), entitled Crystalloluminescence: a new tool to determine the critical size of a crystal nucleus, states: