This is the 11618th most frequent Polish word.
kilkunastosekundową
"Kilkunastosekundową" means "lasting several seconds" in English.
The adjective 'kilkunastosekundową' is used to describe the noun 'reklamę', indicating its length as several seconds.
Program telewizyjny zawierał kilkunastosekundową reklamę.
The TV program included a several-seconds-long advertisement.
In this sentence, 'kilkunastosekundową' characterizes the 'przerwa', describing the duration of the break.
Podczas koncertu miała miejsce kilkunastosekundową przerwa.
During the concert, there was a several-seconds-long break.
Here, 'kilkunastosekundową' specifies the duration of 'ujęciem', which refers to the opening shot.