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.
close verb [ I/T ] (MAKE NOT OPEN) âº to change from being open to not being open, or to cause this to happen: [ T ] Come in and close the door. [ T ] Because of an accident, police closed (= blocked) two lanes of the expressway. [ T ] Grace closed her eyes to think.