lettersthat

Lettersthat is a coined term used in discussions of orthography and typography to denote a class or set of letters united by a shared property in written language. It is not an established term in standard reference works, and its precise definition varies with context. In practice, the phrase appears mainly in informal or niche discussions rather than formal linguistic literature.

In one common framing, lettersthat refers to a dataset or catalog of glyphs that satisfy a rule, such as letters composed only of straight strokes, letters with vertical symmetry, or letters with specific stroke counts. In another framing, it serves as a methodological prompt in text analysis to examine letters that begin words within a corpus, with applications in initial-letter distribution, capitalization studies, or cross-language comparisons.

Applications of the concept include font design, readability research, optical character recognition, and stylometric analysis. Because lettersthat is not standardized, researchers typically provide their own definition and scope when using the term, which can lead to varying interpretations across studies and discussions.

See also: orthography, typography, glyph, digraph, initial-letter frequency, corpus linguistics.