scram(redirected from scramb)
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an emergency shutdown of a nuclear reactor
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A sudden shutting down of a nuclear reactor, usually by dropping safety rods, when a predetermined neutron flux or other dangerous condition occurs.
To close down a reactor by bringing about a scram.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
In air-intercept usage, a code meaning, “I am about to open fire. Friendly units keep clear or get clear of the indicated contact, bogey, or area.” The direction of withdrawal may be indicated. The type of fire may be indicated (e.g., scram proximity: “I am about to open fire with proximity-fused ammunition”; scram mushroom: “I am about to fire a special weapon.”)
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved