AC motors operate only on alternating, or house, current.
Acanthus
Architectural ornament in the shape of the acanthus leaf.
Accelerated cost recovery system
A tax calculation to provide greater depreciation during early years of ownership of property or real estate, mandated by the Tax Reform Act of 1986.
Accelerated depreciation
Bookkeeping methods to depreciate property more quickly in the early years of ownership.
Acceleration clause
A provision in some loans, which gives the lender the right to collect the full balance of that loan, if the borrower misses a payment.
Acceleration loss
Energy used in an air-moving system to accelerate the air to the required velocity.
Accelerator
Substance that shortens the setting times of concrete and mortar. Accelerators, or accelerants, are added in cold weather when there is a danger of the concrete or mortar freezing before it can cure properly. Accelerators are considered admixtures. Chemical substance added to a mixture to speed up a reaction.
