One who acts or reacts boldly, without hesitation, and often without forethought, especially in situations which are adventurous or dangerous.
A group of cells that, together with the evocator, control differentiation in the embryo; the inductor
A person who arranges the details of a public event.
A hand-held micro-computer that will perform specific tasks; can be used as an electronic diary, alarm clock, recorder of memos and notes, a portable database etc.