(mathematics, computer science) Having both positive and negative varieties.It wasn't until they tried to subtract 3 from 1 that the elementary school students realized they needed signed numbers.
Having a signature, endorsed.The signed check could be cashed.
2013:Backpacking Wyoming: From Towering Granite Peaks to Steaming Geyser Basins, Wilderness Press, p. 64 //books.google.com/books?id=nT9LAQAAQBAJ&pg=PA64Turn left on poorly signed Highway 292 and proceed on this winding road for about 12 miles…