Modifies a noun

• transistor: The result is that the bipolar transistor dies the " heat death " .

• disorder: Someone close to me has bipolar disorder - what should I do?

• outflow: It also has the spectral signature of a miniature bipolar outflow.

• depression: Many people taking it for undiagnosed bipolar depression go into mild or severe mania.

• illness: The primary risk factor we will use for recruiting subjects is having a parent who has suffered from depression or bipolar illness.

• device: A cross section of a bipolar device is shown above.

Used with adjective complement

• become: Kathy Reichs seems to have become bipolar: unlike Patricia Cornwall who went into a long plummet of quality, she alternates.