Mode
Formal Statement
By mode, I mean the modifications of substance, or that which exists in another and is conceived through another. Modes are the dependent beings — everything that is not substance itself.
In Plain Language
A mode is the opposite of substance in terms of independence. Where substance is "in itself," a mode is always "in something else." Your body, your current thought, this particular wave in the ocean — each is a way that something more fundamental is configured. Modes cannot be understood on their own; you always have to refer back to what they modify.
Why This Follows
With substance defined as in-itself (gs-01), we now define its polar opposite: that which exists in another. Together, substance and mode will exhaust all of reality.
A mode is whatever exists in, and is conceived through, something other than itself.
Connected Concepts
If modes are always "in" substance, does that make them less real than substance, or just differently real?