Definition: A type of quartz that is usually translucent and can come in various colors, often with a smooth, waxy appearance.

Example: The jewelry was made from beautiful chalcedony stones that shimmered in the light.

Definition: A dark gray or black mineral made of copper sulfide, which is an important source of copper.

Example: Chalcocite is often found in copper mines as a valuable ore.

Definition: A type of element found in group 16 of the periodic table, which includes oxygen, sulfur, selenium, tellurium, and polonium.

Example: Oxygen is a well-known chalcogen that is essential for life.

Definition: A type of chemical compound that consists of a chalcogen element combined with a more electropositive element, typically forming a binary compound.

Example: The researchers studied various chalcogenides for their potential use in solar cells.

Definition: A yellow mineral made of copper and iron sulfide, which is a significant source of copper.

Example: Chalcopyrite is often found in copper mines as a valuable ore.

Definition: A type of substance produced by body tissues that can stop cell division in those tissues.

Example: Chalones play a role in regulating cell growth and division in various tissues.

Definition: A part of a gun where the bullet is loaded before firing.

Example: The gunsmith inspected the chambering to ensure it was functioning properly.

Definition: To place or store something in a chamber, which is a closed space or room.

Example: The technician is chambering the new equipment for testing.

Definition: A flat surface created by cutting off the corner or edge of a material, often used in woodworking and construction.

Example: The carpenter added a chamfer to the edge of the table for a smoother finish.

Definition: To cut or shape the edge or corner of an object to create a sloped surface instead of a sharp one.

Example: The carpenter decided to chamfer the edges of the table for a smoother finish.

Definition: A protective covering for the front of a horse's head, often used in battle or for decoration.

Example: The knight's horse wore a beautifully crafted chamfron during the tournament.

Definition: A black material made from burned wood that is used for fuel, drawing, and filtering.

Example: The artist used charcoal to create a beautiful sketch of the landscape.

Definition: To draw or write using a black material made from burned wood or other organic substances.

Example: She used charcoal to create a beautiful drawing of the landscape.