Botany. 1  a tuft of silky hairs at the end of a seed. 2  the leafy crown of a tree; cluster of leaves at the end of a stem. 3  a terminal cluster of bracts, as in the pineapple.
The flexible pads are called base-isolators, whereas the structures protected by means of these devices are called base-isolated buildings. The main feature of the base isolation technology is that it introduces flexibility in the structure.
Common Base. The common base configuration is another configuration in which, after the transistor is biased using a DC biasing circuit, the positive and negative terminals of the input signal are connected to the emitter and the base respectively. The output signal is taken from the potential difference between the collector and the base.