Sentence:  Moreover, there are only four hyperbolic honeycombs with material vertices and material cells (the cells are entirely inside of hyperbolic space), eleven with ideal vertices or cells (the cells touch the boundary of hyperbolic space in some way), and all others have either <WSD>hyperideal</WSD> vertices or <WSD>hyperideal</WSD> cells (the cells go outside of the boundary of hyperbolic space in some way). 
Meaning of the word marked with <WSD> tags:  An ideal of a semihypergroup.