quasisymmetry

/K W AA1 S AH0 S AH0 M AH0 T R IY0/
noun
  1. 1

    (mathematics) A mapping that preserves shape but allows size to change in a well-defined manner.

  2. 2

    (biology) A pattern in which many copies of a viral protein form a huge spherical coating, where each subunit has an almost symmetrical arrangement with its neighbors.