Definition: The act or process of moving something forward or driving it forward, often through the use of force or energy.

Example: The propulsion of the rocket was powered by a powerful engine.

Definition: Relating to the act of pushing or driving something forward.

Example: The propulsive force of the rocket allowed it to break free from the Earth's atmosphere.

Definition: A chemical group that comes from propane and has the formula C3H7, often used in organic chemistry.

Example: Propyl alcohol is commonly used as a solvent in various industrial applications.

Definition: A type of flammable gas that is made from petroleum and is used in making other chemicals.

Example: Propylene is commonly used in the production of plastics and other chemicals.

Definition: Relating to or derived from a chemical compound known as propyl, which is a type of hydrocarbon.

Example: The propylic compound was used in the synthesis of various organic materials.

Definition: A type of hydrocarbon that contains a triple bond between carbon atoms, specifically with the formula C3H4.

Example: Propyne is often used in organic synthesis and as a fuel.

Definition: The part of the brain that includes the cerebral hemispheres and is responsible for higher brain functions such as thought and action.

Example: The prosencephalon plays a crucial role in processing sensory information and regulating emotions.

Definition: The front part of the head of certain worms, located just before the mouth.

Example: The prostomium helps the worm sense its environment as it moves through the soil.

Definition: A rare and highly radioactive metal that is similar to uranium and has several isotopes, with the most common being protactinium-231, which has a long half-life.

Example: Protactinium is used in some types of nuclear research due to its radioactive properties.

Definition: A type of protein found in the seminal fluid of salmon that can dissolve in water and reacts with acids and metals.

Example: Protamin is used in medicine to reverse the effects of heparin during surgery.