This is the 923rd most frequent Azerbaijani word.
məlum
"Known" or "obvious."
Here, 'məlum' is used as an adjective meaning 'known' or 'familiar'.
Bu fakt hamı üçün məlumdur.
This fact is known to everyone.
In this sentence, 'məlum' describes the state of knowledge, implying 'known' or 'acknowledged'.
Əgər sənə məlum deyilsə, biz bunu araşdırarıq.
If it is not known to you, we will investigate it.
Here, 'məlum' qualifies 'truth' signifying its established and recognized nature.