Clearing

The registration and settlement of a trade that includes provisions for margin requirement and performance guarantee.

The removal of all vegetation such as trees, shrubs, brush, stumps, exposed roots, down timber, branches, grass, and weeds. The removal of all rubbish and all other objectionable material. See grubbing.

A sequence of events used to disconnect a call and return to the ready state. 2. Removal of data from an information system (IS), its storage devices, and other peripheral devices with storage capacity, in such a way that the data may not be reconstructed using common system capabilities (i.e., keyboard strokes); however, the data may be reconstructed using laboratory methods. Cleared media may be reused at the same classification level or at a higher level. Overwriting is one method of clearing. [INFOSEC-99]