Definition: The measure of how well a surface can emit thermal radiation compared to a perfect black surface at the same temperature.

Example: The emissivity of the material affects how efficiently it can radiate heat.

Definition: To send out or give off something, such as light, heat, or sound.

Example: The factory emits smoke into the air every day.

Definition: The amount of energy or particles that are released from a surface in a specific area over time.

Example: The emittance of the material was measured to determine its efficiency in energy transfer.

Definition: A device or object that sends out or releases something, such as light, sound, or particles.

Example: The light emitter in the lamp brightens the room.

Definition: A substance that helps to start or increase menstrual bleeding.

Example: The doctor prescribed an emmenagogue to help regulate her menstrual cycle.

Definition: A bright orange crystalline substance derived from certain plants, commonly used as a laxative.

Example: The doctor recommended emodin for its laxative properties.

Definition: Having a softening or soothing effect, especially on the skin or other sensitive areas.

Example: The emollient cream helped to relieve her dry skin.

Definition: A substance that makes the skin softer and smoother, often used in creams and lotions.

Example: The lotion contains an emollient that helps to keep my skin hydrated and soft.

Definition: To pierce or stab something with a sharp object, often used in a violent context.

Example: The knight was able to empale the enemy with his sword during the battle.

Definition: A serious lung condition where the air sacs in the lungs become enlarged and lose their elasticity, making it hard to breathe and increasing the risk of infections.

Example: The doctor diagnosed him with emphysema after he complained of persistent shortness of breath.

Definition: Relating to a medical condition where the air sacs in the lungs are damaged, causing them to become enlarged and less effective in breathing.

Example: The patient was diagnosed with emphysematous changes in the lungs after the X-ray.