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.
In most cases the isolator is mounted on or near the RF source (transmitter or power amplifier). Since the isolator presents a 50 ohm load to the source the Cable length between the source and the isolator is not critical.