Sentence:  Mineral <WSD>cleavage</WSD> is a property of cohesion. The <WSD>cleavage</WSD> of the particles themselves and its attitude with reference to the plane of the greatest and mean dimensional axes help to determine the perfection of rock <WSD>cleavage</WSD>. The more nearly parallel to the greater dimensions of the particle, and the better the mineral <WSD>cleavage</WSD>, the better the rock <WSD>cleavage</WSD> produced. 
Meaning of the word marked with <WSD> tags:  The act of cleaving or the state of being cleft. (from 19th c.)