NSM noun 2adjective 1forms 1 noun2 •Initialism of North Star metric.A North Star Metric (NSM) allows everyone, irrespective of team status, to ask, “How is what I'm doing today helping move the needle on our NSM?” — 2020 •Initialism of natural semantic metalanguage. adjective1 •(Australia) Initialism of not station mated. formsNSMs