multitudinous
adjective/ˌmʌltɪˈtjuːdɪnəs/
/ˌmʌltɪˈtuːdɪnəs/
(formal)- extremely large in numberWord Originearly 17th cent.: from Latin multitudo (from multus ‘many’) + -ous.
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multitudinous
Definition of multitudinous adjective from the Oxford Advanced Learner's Dictionary