This is the 9508th most frequent Catalan word.
instant
A very short period of time; a moment.
Here, 'instant' is used to signify a very short period of time during which an event with noticeable impact occurred.
En un instant, tot va canviar.
In an instant, everything changed.
In this usage, 'instant' denotes a specific, meaningful moment in time.
Aquest és un instant preciós que vull recordar.
This is a precious moment that I want to remember.
Here, 'instant' refers to an exceedingly short amount of time, emphasizing immediacy.