The starting point for any Langman dictionary is rearch. Research with both students and teachers. Research with both students and teachers. It is only in this way that we can keep up-to-date with the ever-changing needs of both groups and adapt our dictionaries accordingly. We would like to take this opportunity to thanks all of the students and teachers, some of whom are l;isted in the acknowledgements tothis edition, who gave generously of their time and ideas. None of what we have achieved with this fifth edition would have been possible without you