French word calendrier comes from Proto-Indo-European *kelh₁-, and later Latin calo (I call, announce solemnly, call out. A military servant.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *kelh₁- | Proto-Indo-European (ine-pro) | |
| calo | Latin (lat) | I call, announce solemnly, call out. A military servant. |
| calare | Latin (lat) | |
| kalendae | Latin (lat) | (Ancient Rome) the calends, the first day of the month. |
| calendarium | Latin (lat) | An account book, debt book. |
| kalendier | Old French (fro) | |
| calendrier | French (fra) | Calendar. Program, schedule. |