Thin market - Financial definition Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Tags: concept financial markets Concise definition of the term thin market A market with little trading and poor liquidity. Additional information related to this definition Definition of related term Liquidity Browse the financial glossary in alpabetical order # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z