|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
plasminogen plas·min·o·gen (plāz-mĭn'ə-jən)
The inactive precursor to plasmin that is found in body fluids and blood plasma. Also called profibrinolysin.