Definition: A bright green to blue-green mineral made of copper, often found in certain types of rocks.

Example: The geologist was excited to find a large piece of dioptase during the mineral hunt.

Definition: A unit used to measure how strongly a lens can bend light, which is calculated by taking the inverse of the distance from the lens to the point where it focuses light, measured in meters.

Example: The optometrist prescribed glasses with a diopter of -2.5 to correct my vision.

Definition: A unit of measurement used to express the optical power of a lens or mirror, equal to the reciprocal of the focal length in meters.

Example: The optometrist measured my vision and prescribed glasses with a strength of +2.5 dioptres.

Definition: Related to the bending of light to help with vision or optics.

Example: The dioptric properties of the lens improve the clarity of the image.

Definition: A type of hard, granular rock that is made up of minerals like plagioclase and often contains other minerals such as hornblende or biotite.

Example: The construction workers used diorite for the building's foundation because of its strength and durability.

Definition: Relating to or containing a type of coarse-grained igneous rock that is composed mainly of plagioclase feldspar and hornblende.

Example: The geologist described the mountain's composition as dioritic due to the presence of diorite.

Definition: A clear, colorless liquid that can catch fire and is used to dissolve substances like fats and resins in products such as paints and cosmetics.

Example: Dioxane is often used in laboratories as a solvent for various chemical reactions.

Definition: A chemical compound made of one metal atom and two oxygen atoms.

Example: Carbon dioxide is a common example of a dioxid.

Definition: A chemical compound that has two oxygen atoms in each molecule.

Example: Carbon dioxide is produced when we breathe out.

Definition: A group of harmful chemical compounds that can cause cancer and birth defects, often found as pollutants from industrial processes and certain herbicides.

Example: Dioxins are dangerous pollutants that can accumulate in the food chain and pose serious health risks.