'many-flowering' originates from Modern English, specifically the combination of the adjective 'many' and the present-participial adjective 'flowering', where 'many' meant 'a large number' and 'flowering' meant 'producing flowers'.

'many' comes from Old English 'manig' (from Proto-Germanic *managaz) meaning 'many'; 'flower' comes via Old French 'flor' from Latin 'flos, flor-' meaning 'flower'. The compound 'many-flowering' is a Modern English formation combining these elements with the suffix '-ing' to form an adjectival phrase.

Initially the component words meant 'a large number' and 'to produce flowers' respectively; combined in Modern English they convey the single descriptive idea 'bearing many flowers'.