1 definition by JohnLS
Classification of an SCP of the SCP foundation. It usually means the SCP is not well understood and/or permanent containement is not possible, this does not mean said SCP is harmful.
"SCP-173 is an Euclid class SCP. It is a concrete, rebar sculpture that moves when not looking at it. When it gets close to a human or otherwise living creature, SCP-173 will snap it's neck and kill it, or attempt to. It is dangerous and hostile, and can move through vents, but can be contained fairly easily by putting it in a containment chamber, although Containment Breaches involving it have happened before."
by JohnLS November 21, 2018