Complex sentence: Osteoblast (from the Greek combining forms for "bone", οστό, "ostō" and βλαστάνω, "blastanō" "germinate") are cells with single nuclei that synthesize bone.
Split into simpler sentences: Osteoblast (from the Greek combining forms for "bone", οστό, "ostō" and βλαστάνω, "blastanō" "germinate"). Osteoblasts are cells with single nuclei that synthesize bone.