Definition: A flexible tube used in medicine to enter a body cavity or vessel, allowing fluids to flow in or out, such as draining urine or delivering medication.

Example: The doctor inserted a catheter to help drain the patient's bladder.

Definition: The process of inserting a thin tube into a body part, often to help with medical procedures or to drain fluids.

Example: The doctor explained that catheterization is necessary for the patient's treatment.

Definition: Describing something that is attracted to the negative electrode in an electrical circuit.

Example: The ions moved in a cathodal direction during the experiment.

Definition: A type of electrode that has a negative charge and is used in various electrical devices, such as batteries and electron tubes, where it plays a role in the flow of electricity.

Example: In a battery, the cathode is where the reduction reaction takes place.

Definition: Relating to the negative electrode in an electrical device, where electrons flow into the device.

Example: The cathodic protection system helps prevent corrosion in pipelines.

Definition: A type of ion that carries a positive charge and moves towards the negative electrode during electrolysis.

Example: In a solution, the cation is attracted to the cathode where it can gain electrons.

Definition: Relating to a type of ion that has a positive charge and is attracted to negative electrodes in electrolysis.

Example: Cationic surfactants are often used in shampoos and conditioners to help reduce static and improve hair texture.

Definition: Relating to mirrors and the images they reflect, or using mirrors to direct light.

Example: The catoptric system in the telescope allows for clearer images of distant stars.

Definition: In the direction toward the tail or back part of an animal's body.

Example: The doctor examined the patient and noted that the pain radiated caudad from the lower back.

Definition: Relating to or located at the tail or rear part of an animal's body.

Example: The caudal fin helps the fish to swim efficiently in the water.