This is the 971st most frequent Czech word.
rekordní
"Rekordní" means "record-breaking" or "record-setting" in English.
Here, 'rekordního' is used as an adjective modifying 'hospodářského růstu', showing that the economic growth mentioned is unparalleled or unprecedented.
V posledních letech bylo dosaženo rekordního hospodářského růstu.
In recent years, record economic growth has been achieved.
Here, 'rekordní' describes the temperature, suggesting it reached levels not recorded before.
Teplota během léta byla místy rekordní.
The temperature during the summer was record-breaking in some places.
Here, 'rekordní' qualifies 'čas', indicating that the time referenced is one associated with a precedent-setting or record-breaking achievement.