An exocytotic vesicle is a membrane bound vesicle containing contents intended for release into the external environment. The vesicle will ultimately be fused with the cell membrane when its contents are released.

Fused silica has 2 meanings: previously fused silica and presently fused silica.

Previously fused silica is fused by heating it to its melting point. This can be done in crucible in a furnace.

Presently fused silica is already hot and fused.

Note: melted silica is probably a conductor, at least melted glass is a conductor.

The difference of calcium chloride and fused calcium chloride is the bond acting on their molecules. The fused calcium chloride is fused while the calcium chloride is not fused.

Fused silica is an engineering-quality, amorphous version of quartz.

Source: http://www.makeitfrom.com/material-data/?for=Fused-Silica-Fused-Quartz

The person is from ages 32-50 when the lambdoidal and sagittal sutures are fused but the coronal sutures are not fused.