(in Latin) a verbal adjective similar to the gerund in form and noting the obligation, necessity, or worthiness of the action to be done, as legendus in Liber legendus est, “The book is worth reading.”
–adjective
2.
resembling a gerund.
Origin: 1375–1425; late ME < LL gerundīvus.See gerund, -ive
ge·run·dive (jə-rŭn'dĭv) n. A verbal adjective in Latin that in the nominative case expresses the notion of fitness or obligation and in other cases functions as a future passive participle.
[Middle English gerundif, from Late Latin gerundīvus, from gerundium, gerund; see gerund.]