iaciendus

Future passive participle (gerundive) of iaciō (“throw, hurl; emit”).

iaciendus (feminine iacienda, neuter iaciendum); first/second-declension participle

1. which is to be thrown, which is to be hurled, which is to be cast, which is to be flung: which is to be thrown away
2. which is to be laid, which is to be set, which is to be established, which is to be built, which is to be founded, which is to be constructed, which is to be erected
3. which is to be sent forth, which is to be emitted; which is to be brought forth, which is to be produced
4. which is to be scattered, which is to be sown, which is to be thrown
5. (as a shadow) which is to be projected
6. (figuratively) which is to be thrown out in speaking, which is to be let fall, which is to be uttered, which is to be mentioned, which is to be declared

First/second-declension adjective.