Transgenic organisms: 'Trans-' means 'crossing from one place to another'. The '-genic' bit means 'genes'. So it means that bits of genes from different living things have been bolted together and spliced into another organism to make a new one which does something which the scientists want it to do. For example, it could be a plant that resists a particular type of weedkiller or it could be a sheep which makes some special substance in its milk.