Noise-cancelling headphones. Noise-cancelling headphones are headphones that reduce unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing.
English to Speakers of Other Languages (ESOL): The term ESOL is generally used when describing programs outside of a PK-12 setting that are designed for ELLs who seek proficiency in social and academic language; ESOL programs, which may also be referred to as English as a Second Language programs, generally teach basic grammar, vocabulary and ...
An ESOP is a type of retirement plan. A company provides shares of stock or the money to purchase shares to the plan for enrolled employees. The actual plan shares are not distributed to the employee until he or she leaves the company. Instead, the assets may be placed into a trust.