"Propulsion" Natural Recordings by Native Speakers
The act or device that provides the force that propels an object, especially a vehicle, forward or upward.
A rare one!<br><br>Proppterygium is a term used in ophthalmology to describe an iridodonesis. <br><br>In more common terms, it refers to a hangnail of the iris, which is a small, visible filament that projects from the edge of the iris, often as a result of damage or injury to the iris.<br><br>In simpler words, a propertgium is a small, wispy filament or thread that sticks out from the edge of the iris, giving it a sort of "hanging" appearance.
Propugnation is not a word in the English language. It's possible that it's a misspelling or a non-standard term.