7-Letter Words Starting: IS

• An isoenzyme

• one of the three sections of the hipbone; situated below the ilium

• A line on a chart joining parts of a stratigraphic unit that have the same thickness; an isopachous line.

• A line of equal or constant rainfall on a graph or chart, such as a weather map.

• (biology) reproduction by the union or fusion of gametes of the same size and structure

• a relatively narrow strip of land (with water on both sides) connecting two larger land areas

• a cord-like tissue connecting two larger parts of an anatomical structure