“Sgd.” Merriam-Webster.com Dictionary, Merriam-Webster, www.merriam-webster.com/dictionary/sgd. Retrieved 29 November 2022. Add sgd to one of your following lists or create a new one. There is no answer to this question like “MISCELLANEOUS, MEDICAL, INFORMATICS” all categories for everything that does not fit into another category. It can represent anything from “leftover” items to hard-to-classify items.
