The wood of most conifer species is fissile [ˈfɪsaɪl], making it much easier to cut than that of sycamore and hornbeam.

fissile [ˈfɪsaɪl]
adj

1) describes materials that are capable of undergoing fission—that is, the process in which the nucleus of a heavy atom is split apart, releasing a large amount of energy.

2) also describe something, such as wood or crystals, capable of or prone to being split or divided in the direction of the grain along natural planes.

English