trigraphs
Three-character letter groups
Trigraphs are three-letter combinations that represent a single sound.
In English, the most common is *tch* for the sound at the end of catch or watch.
Compare to digraphs, which use two letters for one sound.
In programming, trigraphs are three-character sequences that stand in for characters unavailable on some keyboards.
Two-letter phonetic units
- graphemesUnits of writing systems
- lettersAlphabetic characters or mail
- alphabetLanguage's letter system
- consonantsLetters that aren't vowels
vowels · spelling · writing · script · glyphs · phonics · blends · clusters
Minimal sound distinctions
- soundsAudible vibrations
- pronunciationManner of speaking words
- articulationClear vocal expression
- speech soundsUnits of spoken language
allophones · syllables · phonological · blending · segmenting · voiced · voiceless · fricatives
Interpreting written text
- spelling patternsRules governing letter arrangements
- phonics instructionTeaching sound-symbol correspondence
- encodingConverting data to format
- word recognitionIdentifying written symbols as language
Hidden writing system
- encryptionConverting data into code
- codebreakingSolving secret communications
- substitution cipherEncoding by character replacement
- cryptanalysisStudy of breaking ciphers
n-grams · bigrams · text analysis · pattern recognition · statistical analysis · entropy · plaintext
digraphs
Two-letter phonetic units
- graphemesUnits of writing systems
- lettersAlphabetic characters or mail
- alphabetLanguage's letter system
consonants · vowels · spelling · writing · script · glyphs · phonics · blends · clusters · tch
phonemes
Minimal sound distinctions
- soundsAudible vibrations
- pronunciationManner of speaking words
- articulationClear vocal expression
speech sounds · allophones · syllables · phonological · blending · segmenting · voiced · voiceless · fricatives · acoustic
reading
Interpreting written text
- spelling patternsRules governing letter arrangements
- phonics instructionTeaching sound-symbol correspondence
- encodingConverting data to format
cipher
Hidden writing system
- encryptionConverting data into code
- codebreakingSolving secret communications
- substitution cipherEncoding by character replacement
cryptanalysis · n-grams · bigrams · text analysis · pattern recognition · statistical analysis · entropy · plaintext