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.
set-id-field-id!, for each field that includes a #:mutable option, or when the #:mutable option is specified as a struct-option; a mutator procedure that takes an instance of the structure type and a new field value. The structure is destructively updated with the new value, and #<void> is returned.