Definition: A medical condition where the lens of the eye becomes cloudy, leading to vision problems, or a large waterfall.

Example: The doctor recommended surgery to remove the cataract from her eye.

Definition: Relating to or affected by a clouding of the lens of the eye, which can impair vision.

Example: The doctor explained that her cataractous condition could be treated with surgery.

Definition: A condition where the mucous membranes, particularly in the nose and throat, become inflamed, often causing a runny nose and congestion.

Example: She was suffering from catarrh, which made it difficult for her to breathe through her nose.

Definition: Related to a condition that causes the production of excess mucus in the nose and throat, often due to inflammation.

Example: The doctor diagnosed her with a catarrhal infection that was causing her persistent cough.

Definition: A mental state where a person is unable to move or respond normally, often seen in severe mental disorders.

Example: During her episode of catatonia, she remained completely still and unresponsive for hours.

Definition: Describing a state where a person shows little or no movement, activity, or expression, often related to severe mental health conditions.

Example: After the traumatic event, she appeared catatonic, sitting silently for hours without moving.

Definition: A type of natural compound found in plants that has antioxidant properties and is often used in dyeing and tanning processes.

Example: Catechin is known for its health benefits, particularly in green tea.

Definition: A type of chemical that acts as a hormone or neurotransmitter in the body, including substances like epinephrine and dopamine, which are important for various physiological functions.

Example: Catecholamines are released during stress and help prepare the body for a 'fight or flight' response.

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.