aro acronym stands for “Account Receivable Outstanding,” which is used in accounting to describe the amount of money a company is owed by its customers for goods or services provided on credit. This acronym is commonly seen in financial statements and is crucial for assessing a company’s liquidity and ability to manage its cash flow. In business contexts, “ARO” can also refer to different concepts depending on the industry, such as “Advanced Research Objectives” in academic or research settings.