Â©Copyright 2004 - 2015 Meaning-of-Names.com-Powered by Swigity, LLC Meaning of Niemann Last Name-Surname-Family Name Niemann.Copyright 2004 - 2015 Meaning-of-Names.com-Powered by Swigity, LLC Meaning of Niemann Last Name-Surname-Family Name Niemann.
open - of a set; containing points whose neighborhood consists of other points of the same set, or being the complement of an open set; of an interval; containing neither of its end points.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  open, clear(noun) a clear or unobstructed space or expanse of land or water. finally broke out of the forest into the open. 2  outdoors, out-of-doors, open air, open(noun) where the air is unconfined.