Exam: Cambridge English: C2 Proficiency (CPE)

Definition: A chemical compound that contains a specific ion made of chromium and oxygen, typically appearing in orange or red color.

Example: The laboratory used dichromate to test for the presence of certain substances.

Definition: A type of flowering plant that has two seed leaves, known as cotyledons, which appear when the plant starts to grow.

Example: The garden was filled with various dicotyledons, showcasing their beautiful flowers and unique leaf patterns.

Definition: Referring to plants that have two seed leaves or cotyledons when they germinate.

Example: Sunflowers are dicotyledonous plants because they have two cotyledons.

Definition: A structure in plant cells that is part of the Golgi apparatus, consisting of a stack of flattened vesicles that help in processing and packaging proteins.

Example: The dictyosome plays a crucial role in modifying and sorting proteins for secretion in plant cells.

Definition: Describing an animal or organism that has only two toes, fingers, or claws.

Example: The didactyl species of birds are known for their unique foot structure.

Definition: An animal that has two digits or toes on each foot.

Example: The didactyl species is known for its unique foot structure.

Definition: A quality or feature that makes one thing different from another, often used to describe what sets apart one species from others in biology.

Example: The differentia of the species is its unique coloration and size.

Definition: Relating to or causing a difference; distinctive or showing variation.

Example: The differential treatment of students based on their needs can lead to better learning outcomes.

Definition: A difference or variation between similar things, often used in contexts like pricing or mathematics.

Example: The differential in prices between the two stores was surprising.

Definition: A method used to determine the structure of crystalline materials by analyzing the patterns created when X-rays are diffracted by the crystals.

Example: Scientists use diffractometry to study the arrangement of atoms in a crystal.

Definition: A person who marries again after having been married before.

Example: After his divorce, he became a digamist and married a wonderful woman.

Definition: A second marriage that occurs after the first marriage has ended.

Example: After her divorce, she entered into a digamy with someone she met online.