"Propeller" Natural Recordings by Native Speakers
A rotating wing-like device used to propel something, typically an aircraft or a boat, through the air or water.
Propantheline is an anticholinergic medication used to treat peptic ulcers, gastrointestinal disorders, and other conditions that cause excessive acid production in the stomach. It works by relaxing the smooth muscle in the intestines and reducing the secretion of stomach acid. Propantheline is available in oral and injection forms.
Proper analysis of the word "proparalepsis" reveals that it is a rhetorical term in linguistics referring to a literary or rhetorical device where an action or event is mentioned earlier in a text, while its description is provided later. It is often used to create suspense or emphasize a point.<br><br>Example: "The visitor heard the knock on the door, and the protagonist reluctantly unlocked it." In this sentence, the unlocking of the door is depicted earlier (paralepsis), but its cause (the knock on the door) is provided later.<br><br>In essence, proparalepsis is similar to paralepsis but in reverse order. While paralepsis discusses delayed anticipation of what has been previously stated, proparalepsis instead looks ahead to explain an anticipated future event.
Propargyl refers to a functional group or a type of compound that contains a triple bond between a carbon atom and a methylene group (-CH2-). It has the chemical formula R-C≡C-CH2.
In Greek grammar, a proparoxytone is a type of word or phrase that is stressed on the third to last syllable. This is in contrast to an oxytone, which is stressed on the final syllable, and a paroxytone, which is stressed on the second to last syllable.
To propel means to push or drive something forward with force, often making it move or progress suddenly and quickly. It can also mean to give someone a strong emotional or motivational push to do something. For example: "The coach's words propelled me to win the game."
A substance used to produce a propulsive force to drive a vehicle, such as a rocket, through space or to generate thrust in an aircraft.
Propellants are substances that are used to generate thrust or propulsive force, typically in rockets, engines, or other propulsion systems. They work by generating a high-pressure gas that is expelled out of a nozzle, producing a forward force or thrust.<br><br>In a more general sense, propellants can also refer to substances that are used to make something move or propel it forward. For example, a propellant in a firework is a substance that produces a high-pressure gas when it burns, causing the firework to lift off the ground.<br><br>Examples of propellants include:<br><br> Liquid fuels (e.g. liquid hydrogen, liquid oxygen) used in rocket engines<br> Solid fuels (e.g. ammonium perchlorate) used in solid rocket boosters<br> Compressed gases (e.g. compressed air, compressed nitrogen) used in pneumatic systems<br> Explosives (e.g. nitroglycerin) used in some rocket propellants and other applications.<br><br>The choice of propellant depends on the specific application and the desired performance characteristics of the system.
To move (something or someone) forward with force or impetus, typically by pushing or imparting motion to it with a propelling force, such as a jet of gas, steam, or water, or an explosive charge or propeller.<br><br>Example sentences:<br> The spacecraft used its rocket to propelling upward into orbit.<br> The propelling force of the engine made the car accelerate rapidly.<br> The propelling device used to launch the golf ball into the air.
Propene, also known as propylene, is an organic chemical compound that is the simplest unsaturated hydrocarbon, having the chemical formula C3H6. It is a colorless, flammable gas with a boiling point of -48.2°C and a melting point of -185.5°C.<br><br>Propene is an important building block for the production of various chemicals, including plastics, polymers, and rubbers. It is also used as a fuel and as an intermediate in the production of various other chemicals.<br><br>Propene is also known as propylene, propene-1, and methyl ethylene.