Definition: A type of mineral that is a green form of pyroxene, often showing distinct layers and sometimes containing other minerals.

Example: The geologist identified the rock as diallage due to its layered structure and green color.

Definition: Relating to a material that is pushed away by a magnet rather than attracted to it.

Example: Copper is a diamagnetic material, meaning it is repelled by magnetic fields.

Definition: A type of magnetism that occurs when a material creates a weak magnetic field in the opposite direction of an external magnetic field, causing it to be repelled by the magnet.

Example: Copper exhibits diamagnetism, meaning it is repelled by magnetic fields.

Definition: A type of chemical compound that has two amide groups in its structure.

Example: The chemist synthesized a diamide for the experiment.

Definition: A type of chemical compound that has two amino groups in its structure.

Example: Diamine is often used in the production of various polymers and dyes.

Definition: A type of sound-producing device that creates sound by using a slotted piston moved by compressed air, often used as a fog signal that emits two tones.

Example: The diaphone sounded through the fog, warning ships of the nearby coast.

Definition: A geological formation where a soft material, like salt or gypsum, pushes through harder rock layers above it, creating a dome-like shape.

Example: The diapir formed over millions of years as the salt layer pushed upward through the surrounding rock.

Definition: Relating to a geological formation where a less dense material rises through denser material, often creating a dome-like structure.

Example: The diapiric structure was formed over millions of years as salt pushed its way up through the surrounding rock.

Definition: A clear image on transparent material, such as glass or film, used for projecting pictures with a projector.

Example: The teacher used a diapositive to show the students images of the solar system.

Definition: A type of mineral that is a white, pearly substance made of aluminum and hydrogen oxide, often found in certain rocks and used for various industrial purposes.

Example: The geologist identified the diaspore in the rock sample as an important mineral for their research.