Definition: A type of virus that has RNA and can insert its genetic material into the DNA of a host cell, often associated with diseases like AIDS.

Example: The retrovirus is responsible for causing HIV, which leads to AIDS.

Definition: The process by which a neuron takes back a neurotransmitter after it has sent a signal across a gap to another neuron.

Example: The medication works by blocking the reuptake of serotonin, which helps improve mood.

Definition: To give someone a vaccine again after they have already been vaccinated.

Example: The health department decided to revaccinate all children to ensure they were protected against the disease.

Definition: The act of giving someone a vaccine again after some time has passed since their last vaccination.

Example: Revaccination is important to ensure continued immunity against certain diseases.

Definition: The process of confirming or checking again to ensure something is still valid or acceptable.

Example: The revalidation of the certification is required every two years.

Definition: To bring new energy or life to something, making it active or fresh again.

Example: The community center aims to revitalize the neighborhood by offering new programs and activities.

Definition: The process of bringing new life or energy to something, making it active or fresh again.

Example: The revitalization of the old neighborhood has attracted many new businesses.

Definition: To bring new energy, life, or strength to something that has become weak or inactive.

Example: The city plans to revitalize the old park to make it more enjoyable for families.

Definition: To come back to life or consciousness after being dead or unconscious; to become active or popular again.

Example: After a long winter, the flowers began to revive in the spring sunshine.

Definition: To bring someone or something back to life, consciousness, or a state of activity; to make something active or strong again.

Example: The doctor was able to revive the patient after a few minutes of CPR.

Definition: A person or thing that brings something back to life, consciousness, or a previous state.

Example: The reviver of the ancient traditions helped the community reconnect with its roots.