A romantic network, or a particular subset of relationships within a romantic network, whose members are closely connected. They can be intimate, familiar, romantic, or sexual in nature , but not limited to. The polycule created is unique to the people involved and the variations, they create.
"When people practices polyamory, they create a new kind of relationship. These relationships are dependent on the type of relationship they have formed. Regardless of what type of relationship you form, they form a polycule. "
by Ms.Kittie January 23, 2019
A portmanteau of "polyamory" or other relationship models beginning with "poly" and "molecule". Polycule is used to describe any system of connected non-monogamous relationships.

A polycule can be as simple as a "V" (A is dating both B and C, with their approval, but B and C are not dating each other) or a triangle (A, B, and C are all dating each other), but it can also get very complex. (Ex: A is dating B and C. B is dating A and D. C is dating A, E, and F. F is also dating G.)

When drawn out as a chart, these connections can look similar to a molecular structure- hence the name polycule.
"My boyfriend's wife just got a new girlfriend. Looks like I'll have to update our polycule!"

"My OTP is Malcolm, Sheila, and Gary. ... What? One True Pairing? No, I meant One True Polycule."
by 21derful March 16, 2015
Physical matter or material that achieves perfection by reciprocally determining and therefore limiting other physical matter or material.

A very small particle contingent on interaction with other particles to achieve perfection.
The most perfect world of all is a whole of contingent polycules.

The limiting of one polycule by another polycule sets it free, thereby eliciting the perfection of both polycules.
by Tripartite Wisdom December 19, 2010