Definition: A vehicle that can travel across the surface of a planet or moon, often used for exploration.

Example: The rover successfully landed on Mars and began sending back data.

Definition: More flexible and softer than something that is rubbery.

Example: The new material is rubberier than the old one, making it easier to mold.

Definition: Having qualities similar to rubber, such as flexibility and resilience.

Example: The material used for the shoes is rubberlike, making them very comfortable to wear.

Definition: Causing the skin to become red.

Example: The doctor recommended a rubefacient ointment to help with the inflammation.

Definition: A substance that causes irritation and redness of the skin when applied externally.

Example: The doctor recommended a rubefacient to help improve blood flow to the area.

Definition: A mild contagious disease caused by a virus, often resulting in a rash and fever, and can lead to serious birth defects if a pregnant woman is infected.

Example: Rubella is less severe than measles but can still pose risks to pregnant women and their babies.

Definition: A type of gemstone that is a red variety of tourmaline, often used in jewelry.

Example: She wore a beautiful ring with a rubellite stone.

Definition: A contagious viral disease that causes a red rash and fever, commonly known as measles.

Example: Rubeola is a serious illness that can lead to complications if not treated properly.

Definition: Relating to a chemical element called rubidium, or containing rubidium.

Example: The rubidic compounds are used in various scientific applications.

Definition: A soft, silvery-white metal that belongs to the alkali group. It can catch fire easily in air and reacts strongly with water. It is used in devices like photocells and vacuum tubes.

Example: Rubidium is used in some types of atomic clocks and research applications.

Definition: The state or quality of being basic or simple, often referring to something that is not fully developed or is in an early stage.

Example: The rudimentariness of the technology made it difficult to use effectively.