isopor

Etymology
+, on the basis that isopors are "lines of equal travel".

Noun

 * 1)  A line on a map that joins places of equal annual change in a geomagnetic property; an isoporic line.

Etymology
From, a trademark used by and later by , German companies that sold the product in Brazil.

Noun

 * 1)  expanded polystyrene, styrofoam