For a type, the number of types of the same length sharing the same initial trigram; this is a measure used in research on reading (cf. Kennedy, Pynte und Ducrot 2002).

For case-insensitive regularity, please see Type DC regularity in the Types DC table.

Data type:

Data type
Lexicon frequency
Data subtypes
Absolute value, normalized value, absolute value log10, normalized value log10, rank, rank 123
Basis of normalization
per million types (= lexicon entries)
Query operators
greater or equal, lower or equal
Null value

Available in tables:

Also, in the ngrams tables, you can use this filter on any of the components: