1 Dehydration. 2  Not staying hydrated with enough water during the day may be one of the big causes of leg cramps at night. 3  This is most likely due to fluid imbalances of electrolytes (mainly sodium, potassium, calcium, and magnesium).4  Overuse of the muscles, perhaps from exercising, gardening or other physical activities. Dehydration. 2  Not staying hydrated with enough water during the day may be one of the big causes of leg cramps at night. 3  This is most likely due to fluid imbalances of electrolytes (mainly sodium, potassium, calcium, and magnesium).
Lustre (mineralogy) Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the latin lux, meaning light, and generally implies radiance, gloss, or brilliance. A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky. Similarly, the term vitreous (derived from the Latin for glass, vitrum) refers to a glassy lustre. A list of these terms is given below. Lustre varies over a wide continuum, and so there are no rigid boundaries between the different types of lustre.
Definition of macabre. 1 : having death as a subject : comprising or including a personalized representation of death The macabre dance included a procession of skeletons. 2 : dwelling on the gruesome a macabre presentation of a tragic story. 3 : tending to produce horror in a beholder this macabre procession of starving peasants.