Answer: zaxes

AnswerCrossword Clue
ZAXES3-D graph lines
ZAXESSlate axes.
ZAXESRoofing tools
ZAXESRoofers' tools
ZAXESSlate-trimming tools
ZAXESThey make 3-D possible
zaxes(in a three-dimensional Cartesian coordinate system) the axis along which values of z are measured and at which both x and y equal zero
zaxesone of the axes in a three-dimensional rectangular coordinate system
zaxesZAX, a tool for cutting roof slates, also ZEX