13-Letter Words Containing: A,S,T,B,O,R,N

• A gastropod with gills behind the heart, formerly thought to belong to a single group.

• (of gills) Placed behind the heart.

• (of a gastropod) Having gills placed behind the heart.

• Any branching, treelike shape or formation.

• The formation of such a shape or formation.

• action that makes a problem or a disease (or its symptoms) worse

• violent and bitter exasperation

• the condition of being urbanized

• the social process whereby cities grow and societies become more urban

• an enzyme liberated from blood platelets that converts prothrombin into thrombin as blood starts to clot

• a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell