Exam: Cambridge English: C1 Advanced (CAE)

Definition: Describing a state where solid particles are suspended in a gas or liquid, behaving like a fluid due to agitation or the introduction of gas.

Example: The particles in the reactor were fluidized to enhance the chemical reaction.

Definition: To make a substance behave like a fluid, often by suspending solid particles in a gas or liquid.

Example: The engineer fluidized the particles to improve the mixing process.

Definition: A type of soft dessert or pudding made from thickened fruit or grains, often sweet and gelatinous, or it can refer to meaningless or deceptive language.

Example: The politician's speech was filled with flummery, lacking any real substance.

Definition: A mineral that is a source of fluorine, often found in a crystalline form and used in various industrial applications.

Example: The geologist studied the fluor to understand its properties and uses.

Definition: A type of chemical compound made of two benzene rings connected together, often used in making light-emitting devices and various dyes.

Example: Fluorene is commonly used in the production of organic light-emitting diodes.

Definition: To emit light when exposed to radiation, especially ultraviolet light.

Example: The minerals in the rock fluoresce under UV light, creating a beautiful glow.

Definition: A bright orange-red compound that glows under certain conditions, often used in medical tests, ocean studies, and as a dye for fabrics.

Example: The doctor used fluorescein to help identify the problem in the patient's eye.

Definition: A process where a substance absorbs light or other radiation and then emits it as visible light, but only while the original radiation is present.

Example: The fluorescent lights in the room create a bright and vibrant atmosphere.

Definition: Describing something that emits light or appears bright and glowing due to a process called fluorescence.

Example: The fluorescent lights in the room made everything look very bright.

Definition: A type of light that emits bright colors when exposed to ultraviolet light, often used in lamps and lighting.

Example: The fluorescent lights in the office are very bright and energy-efficient.

Definition: In a way that involves or relates to fluorescence, which is the emission of light by a substance that has absorbed light or other electromagnetic radiation.

Example: The signs glowed fluorescently in the dark, making them easy to see.

Definition: A substance that emits light when exposed to radiation, often used in lighting and displays.

Example: The fluorescer in the lamp makes it glow brightly in the dark.