Definition: A very long period of time, often used in geology to describe the largest divisions of time in Earth's history.

Example: The dinosaurs lived during the Mesozoic eon, which lasted millions of years.

Definition: A type of red dye that is used for coloring textiles, inks, and biological samples.

Example: The scientist used eosin to stain the cells for better visibility under the microscope.

Definition: A type of white blood cell that helps the body fight off infections and allergic reactions, which can be easily stained by certain dyes.

Example: Eosinophils play a crucial role in the immune response to parasites and allergens.

Definition: A condition where there is a higher than normal number of a type of white blood cell called eosinophils in the blood, often associated with allergies or parasitic infections.

Example: The doctor diagnosed her with eosinophilia after reviewing her blood test results.

Definition: Relating to a type of white blood cell that is involved in allergic reactions and fighting infections.

Example: The doctor noted an eosinophilic response in the patient's blood test, indicating an allergic reaction.

Definition: Relating to the area of the sea that is found above a continental shelf.

Example: The epeiric sea was rich in marine life due to its shallow waters.

Definition: The process by which the Earth's crust is deformed to create large landforms and features like mountains and plateaus.

Example: Epeirogeny is responsible for the formation of vast plateaus and mountain ranges over geological time.

Definition: A thin layer of tissue that covers the cavities in the brain and spinal cord.

Example: The ependyma helps to produce and circulate cerebrospinal fluid in the brain.

Definition: A white, odorless substance that comes from certain plants or can be made in a lab. It is used to help treat breathing problems like asthma and allergies.

Example: The doctor prescribed ephedrine to help relieve my asthma symptoms.

Definition: A type of insect that belongs to the order Ephemeroptera, commonly known as a mayfly, which is characterized by its short lifespan and aquatic larval stage.

Example: The river was full of ephemerids dancing above the water's surface.