Koiari is a Papuan language spoken inland from Port Moresby in Papua new Guinea. The author writes: 'In 1992 I published the first reading materials available in Koiari as _A first dictionary of Koiari_. This was a people's dictionary aimed mainly at Koiari speakers in the hope that it would help to stimulate them to read and write their own language and to maintain it. This second dictionary is a revised, expanded and more technical version of that dictionary aimed at a wider audience, although it is hoped that Koiari speakers will still be able to use it for their own purposes. As such I hope it will provide further insight into the structure of Koiari and the world view of its speakers.'