frangible UK /ˈfɹæn(d)ʒɪb(ə)l/US /ˈfɹænd͡ʒəbəl/adjective 1noun 1forms 3 adjective1 •Able to be broken; breakable, fragile.Another object still [of roasting iron ore], is to make the ore more frangible, that it may be easily broken into fragments of a suitable size for smelting. — 1838 noun1 •Something that is breakable or fragile; especially something that is intentionally made so, such as a bullet. formsfrangibles · more frangible · most frangible