'lecture-based' originates from the word 'lecture,' which comes from the Latin word 'lectura,' meaning 'a reading,' combined with 'based,' indicating a foundation or primary method.

'lecture' evolved from the Latin 'lectura' through Old French 'lecture,' and 'based' comes from the Middle English 'basen,' meaning 'to build or establish.'

Initially, 'lecture' meant 'a reading,' but it evolved to mean 'an educational talk,' and 'based' has consistently meant 'founded on.'