The 1944 Bletchley Park Cryptographic Dictionary

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SANDWICH v :

To be repeated so as to enclose one or more characters.

SCALE :

Basis on which figures (or letters) above an agreed limit are represented by an extra digit; that number which is represented by 0 and a 1 which is either carried to the left (or dropped) in any arithmetical system; arithmetical modulus, (The common scale is the scale of ten).

SCORE :

The odds in favour of a particular hypothesis, esp. when stated as a logarithm, so that total can be obtained by adding instead of multiplying.

SCRAMBLE, n :

(especially). A re-arrangement of three-figure reciphering tables in an other than the normal day-of-the-month order.

SCRAMBLE, v :

1. To rearrange, especially in non-alphabetical or non-numerical order; to hat.

2. To render (telephonic conversation) unintelligible over a part of a system by interposing frequency-changing mechanisms.

SCREED :

A write-up.

SCRITCH, v :

(especially in Enigma). To test (a hypothesis or possible solution) by examining its implications in conjunction with each of a set of (usually 26) further assumptions in turn, eliminating those cases which yield contradictions and scoring the others.

SEARCH, a :

1. (of intercepting sets). Engaged in searching for transmissions from new stations or on new frequencies or any type of transmission not otherwise covered.

2. Derived from or connected with the intercepts or records of search sets.

SEARCH-STENCIL :

See stencil 2.

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