18551906

18551906 is a numeric string that can represent a date range, most commonly the period from 1855 to 1906. In encyclopedic and archival contexts, the pair 1855 and 1906 is typically shown with an en dash (1855–1906) to denote a lifespan or a span of years during which an event, person, or organization was active. When written without a separator (as 18551906), the meaning is ambiguous and must be inferred from surrounding metadata or documentation.

Possible interpretations include a person's lifespan (born 1855, died 1906), the active years of an institution, or the timeframe during which a historical movement unfolded. Without punctuation, the string is not a standard term and has no single canonical meaning; the intended interpretation depends on the source—such as a library catalog, a biography entry, or a dataset key.

In practice, databases and digital archives may store date spans as concatenated numbers for compactness or as identifiers in machine-readable fields. Readers encountering 18551906 should consult the associated record to resolve the intended meaning.

See also: 1855, 1906, 1855–1906, date ranges, lifespan.