The phrase "preeminent source" means the most important and respected place or person to obtain information, knowledge, or expertise from. Full definition
Bonds News, also quarterly, has been dubbed «the preeminent source of information for professionals» who are keeping track of the $ 100 trillion currently outstanding in the global bond marketplace. (financepublishing.com)
The ANA is the preeminent source of information on reusable nappies and their numerous benefits for parents, caregivers and government agencies.» (thirstiesbaby.com)
The highly respected Marist Poll is often cited by journalists around the globe and is the preeminent source of analysis for public opinion research. (maristpoll.marist.edu)