Per"mu*la`tor, n. (Elec.)
Definition: A special form of rotary converter with stationary commutator and rotating brushes, in which the exciting field is induced by the alternating current in a short-circuited magnetic core instead of being produced by an external magnet.
Source: Webster’s Unabridged Dictionary 1913 Edition
28 April 2025
(adjective) enjoying or showing or marked by joy or pleasure; āa happy smileā; āspent many happy days on the beachā; āa happy marriageā
Contrary to popular belief, coffee beans are not technically beans. They are referred to as such because of their resemblance to legumes. A coffee bean is a seed of the Coffea plant and the source for coffee. It is the pit inside the red or purple fruit, often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit.