lorsque etymology

French word lorsque comes from French que, French lors ((obsolete) then, at that time.)

Detailed word origin of lorsque

Dictionary entryLanguageDefinition
que French (fra) (used with ne) only (ne ... que parses roughly as "(do[es]) not / nothing ... other than"). Links two noun phrases in apposition forming a clause without a (finite) verb, such that the complement acts as predicate.. Substitutes for another, previously stated conjunction.. That (introduces a noun clause and connects it to its parent clause). When, no sooner. Than (introduces a comparison) [...]
lors French (fra) (obsolete) then, at that time.
lorsque French (fra) When (at a time when).