› FINANCE, STOCK MARKET with few people buying or selling shares, etc.: thinly traded markets/securities/stocks There are thinly traded markets for all three companies' shares.
› without enough money, people, supplies, etc. to operate, do a job, or provide what is needed: The refineries were thinly staffed, and employees were overworked. If budgets become more thinly stretched, service quality can only suffer. Because the industry is thinly capitalized, it remains highly vulnerable to the next economic downturn.