1. Pertaining to the ability to procure information or objects that have been obtained over a period of time, especially when they form a comprehensive whole: Henry has a large collection of gleanable tools that he has collected from flea markets and garage sales.
2. Relating to what is available and that can be picked over in search of relevant material: At the national library, Maxine found gleanable sources of materials for her research project which were not available at the university.