This is the 14722nd most frequent German word.
niedrigere
"Lower" or "reduced."
In this sentence, 'niedrigere' is used as an attributive adjective, modifying the noun 'Temperatur', and indicates a comparative state, meaning 'lower' related to something else.
Die niedrigere Temperatur wird das Wachstum der Pflanzen verlangsamen.
The lower temperature will slow down the growth of the plants.
Here, 'niedriger' (derived from 'niedrigere') is used in its comparative form to describe the loudness level of the radio, requesting it to be set to a lower volume.
Kannst du das Radio ein wenig niedriger einstellen?
Can you set the radio slightly lower?
In this example, 'niedriger' as a comparative adjective modifies 'Kommode', comparing it to another object (the desk) to express it has a lower height.