(aviation) The rate at which an aircraft gains altitude. A negative rate of climb implies descent.

A person who follows the philosophy of rationalism

The ratio of the speeds of rotation of the initial and final gears in a gear train.

(UK) a rate (typically of money) that does not vary over time

(UK) Being or relating to a flat rate.

(finance) The percentage of an amount of money charged for its use per some period of time (often a year).

Offered for sale or rent at a lower than usual rate.

A telephone number for which an extra charge is assessed to the caller, part of which is returned to the owner of the number.

plural of premium-rate telephone number

To use the powers of the mind logically and methodically; to reason.