> as lemmas
monoalphabetic
monoalphabetic adj.
Brit. 
/ˌmɒnəʊalfəˈbɛtɪk/
, /ˌmɒnəʊalfəˈbɛtɪk/U.S. /ˌmɑnoʊˌælfəˈbɛdɪk/
designating a cipher in which each letter corresponds to one letter of the normal alphabet./ˌmɑnoʊˌælfəˈbɛdɪk/ΘΚΠ
the mind > mental capacity > knowledge > secrecy, concealment > code, cipher > [adjective] > particular code
polygraphic1878
monoalphabetic1923
polyalphabetic1927
1923 W. F. Friedman Elem. of Cryptanalysis xvii. 113 (table) Table 5.—Synoptic table for cipher analysis. 1. Determine the class from vowel-consonant proportions...2b. Substitution...3c. Monoalphabetic.
1927 Daily Express 24 Nov. 13 The most simple code is the ‘monoalphabetic’, in which a letter is always represented by the same sign, letter, or numeral.
1988 D. Welsh Codes & Cryptogr. vii. 106 A substitution cipher is sometimes described as a monoalphabetic cipher.
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as lemmas
- at the arm's end
- at the back of
- at the back of one's mind
- at the back of one's mind rarely head
- at the bar
- at the bate
- at the bell
- at the best
- at the best advice
- at the best hand
- at the best of times
- at the better hand
- at the bleeding edge
- at the bottom
- at the breast
- at the by
- at the catch
- at the click of a button
- at the climb
- at the clock
- at the coalface
- at the conclusion
- at the contemplation of
- at the cost of something
- at the countertail