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BD (1)

BD (1)
ScnMaster
abbreviation for blowdown, a tone arm motion to the left made to keep the needle on the dial. It is associated with a vanishment of mental mass or energy in the mind of the preclear. It is a period of relief and cognition to the preclear while it is occurring and for a moment after it stops. —ExDn Lectures Approved Glossary: Expanded Dianetics (30 March 1972)