1. castable - Noun
2. castable - Adjective
(engineering) Capable of being cast, as in a mould.
(programming) Capable of being cast to another data type.
castable (plural castables)
(engineering) Any substance that can be cast, as in a mould.
PETN alone cannot be cast as it explosively decomposes slightly above its melting point, but it can be mixed with other explosives to form castable mixtures. Source: Internet
While Coster appears to have experimented with moulds and castable metal type, there is no evidence that he had actually printed anything with this technology. Source: Internet
The chamber is typically lined with refractory materials such as a hard castable refractory ceramic or a soft ceramic thermal blanket (ex: Kaowool). Source: Internet