This is the 8958th most frequent Catalan word.
expulsant
"Expulsant" means "expelling" in English.
In this instance, 'expulsant' is used in the present continuous tense, describing the action of expelling air during speech.
Ell està expulsant aire quan parla.
He is expelling air when he speaks.
Here, 'expulsant' is used as a gerund to describe the method used to accomplish the defense of the city.
Expulsant els invasors, van defensar la ciutat.
By expelling the invaders, they defended the city.
In this sentence, 'expulsant' denotes the ongoing action undertaken by the police to remove the protesters from the park.