tissue plasminogen activator-a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction.issue plasminogen activator-a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction.
A stack of colored notecards. noun. The definition of a small firm sheet of paper used for writing a short message or for keeping small pieces of information. The lined cards used for presentation notes are an example of notecard. a small card, enclosed in an envelope, having a photograph or illustration printed on one side and the other side used for sending short messages.
Also called memory. Cards. a game in which all 52 cards are spread out face down on the table and each player in turn exposes two cards at a time and replaces them face down if they do not constitute a pair, the object being to take the most pairs by remembering the location of the cards previously exposed. Origin of concentration Expand.