Here is a glossary of some terms you may or may not be familiar with. Please take a look through them (I will try to keep them as alphabetically ordered as I can). If you are still confused after reading a description or think there is a word missing don’t hesitate to let me know!
Base: This term refers to the beginning steps of the model. Not all models use the same base. You can refer to the Bases page to see how to fold them.
Crease: When the paper is folded and unfolded you have made a crease.
Crease Pattern: A crease pattern is a one image diagram that shows all the necessary creases to make a certain model. These do not usually include instructions on how to fold the model, although sometimes artists may include step-by-step diagrams as well.
Diagram: The step-by-step instructions or crease patters are often referred to as diagrams.
Edge: The outer side of a model.
Model: This is what you are folding. Often diagrams will refer to the paper you are folding as the “model”.
Mountain Fold: This is usually shown as alternating dot and dash on a diagram. This means to fold the paper like a mountain. When the paper is lying flat on the table it should “pop up” towards you.
Raw Edge: This refers to an edge that is not formed from a crease.
Valley Fold: This is usually shown as dashes only on a diagram. The paper should be folded to look like a valley. When the paper is lying flat on the table it should look like an open book.
This list may be update at any time. Please keep checking back!