'many-fruited' originates from English, formed by combining the adjective 'many' (meaning 'a large number of') and the past-participial adjective-forming element of 'fruit' → 'fruited' (meaning 'having fruit').

'fruit' in English comes via Old French 'fruit' from Latin 'fructus' (from the verb 'frui', meaning 'to enjoy' or 'to have the use of'), and the compound adjective pattern 'X-fruited' developed in English by compounding a quantifier with 'fruited' to describe the abundance of fruit.

Initially, elements related to 'fruit' were tied to use/enjoyment (Latin 'frui'), but over time 'fruit' came to primarily mean the produce of a plant; the compound 'many-fruited' specifically developed to mean 'bearing many fruits'.