insulate

To separate, detach, or isolate.

To separate a body or material from others, e.g. by non-conductors to prevent the transfer of electricity, heat, etc.

Ceramic can be used to insulate power lines.

Of pollen or spores, with superficial ornamentation grouped in circular or polygonal areas separated by grooves.

Among nonwinged grains, the sexine is rugulate, insulate, or microverrucate.

Pollen insulate when the elements are grouped in circular or polygonal areas separated by grooves.