The term 'THEY MAY BE SLID INTO OVENS' can be summarized by the crossword solution of 'TRAYS', which refers to flat, shallow containers used for carrying, holding, or displaying food. Trays are commonly used in restaurants, cafeterias, and other food service establishments, and can also be used in home kitchens. They are typically made of metal, plastic, or wood, and can be slid into ovens to bake or heat food.