820 canonical forms + 578 route stages.
THE TIMELINE ATLAS
JOURNEY ATLAS ↗FORM / ROUTE / BOUND
1398 REVIEWED EVENTSLANGUAGE
IN TIME.
One cross-word chronology for every defensibly bounded form and journey stage—without converting a vague historical label into a fake year.
A reviewed graph bound, not a claim of an earliest human word.
Only stages with directly cited numeric bounds enter this atlas.
Labels remain visible in Journey Atlas, but not parsed into false years.
005 MATCHING EVENTS
FILTER THE CHRONOLOGY
WHEN DID THE EVIDENCE LAND?
TWO CLOCKS.
NO FALSE PRECISION.
FORM CHRONOLOGY dates a canonical linguistic form or reconstruction in the lexical graph.
ROUTE CHRONOLOGY dates a geographic or transmission stage in a word’s journey.
They can share an era band, but they are never silently treated as the same kind of claim.
CROSS-WORD CHRONOLOGY / EARLIEST BOUND FIRST
THE EVIDENCE IN TIME
Medieval4 ON THIS PAGE
700 CE–899 CErange
ROUTE STAGEKhwārizm
algorithm
8th–9th centuries
The scholar's nisba identifies a connection to Khwārizm, south of the Aral Sea.
1 EVIDENCE LINK
The eighth-to-ninth-century biographical window is encoded as a broad calendar range; it does not claim an exact date for the nisba.
AUDIT RECORD ↗800 CE–899 CEcentury
ROUTE STAGEBaghdad
algorithm
9th century
Al-Khwārizmī worked in the Abbasid scholarly world; his name became attached to arithmetic transmission.
1 EVIDENCE LINK
Al-Khwarizmi's Baghdad scholarly activity is placed only within the ninth century in this route model.
AUDIT RECORD ↗1100 CE–1499 CErange
ROUTE STAGEMedieval Latin Europe
algorithm
12th–15th centuries
Latinized name forms become terms for arithmetic with Hindu-Arabic numerals.
1 EVIDENCE LINK
Latin and Middle English arithmetic transmission is modeled across the twelfth through fifteenth centuries.
AUDIT RECORD ↗1200 CE →open
ROUTE STAGEGlobal history of calculation
algorism
early 13th century–today
Algorism remains the historical name for arithmetic with Hindu-Arabic numerals while algorithm becomes its far more prominent altered descendant.
1 EVIDENCE LINK
The open interval begins at the earlier reviewed English horizon and does not claim uninterrupted frequency.
AUDIT RECORD ↗Modern1 ON THIS PAGE
1900 CE →open
ROUTE STAGEGlobal computing
algorithm
20th century–today
Algorithm generalizes from mathematical procedure into a central term of computing and public life.
1 EVIDENCE LINK
The computing-era stage begins at the twentieth-century boundary and remains open into current usage.
AUDIT RECORD ↗UNBOUNDED IS
A REAL RESULT.
Stages without source-backed numeric bounds stay in their complete Journey Atlas route, carry an explicit temporal note, and remain absent here until the evidence supports normalization. The missing point is visible work—not permission to guess.