Z1 stands for Zymodeme 1 (genetics)
Z-TREE stands for Zurich Toolbox for Readymade Economic Experiments
Z-SCALE stands for Height Determination
Z2 stands for ZZT (computer game) Z2 stands for Zero 2 (Street Fighter: Zero 2 game)
Z-Z stands for Zundel to Zundel
z-ROC stands for Z Receiver Operating Characteristic
Z0 stands for Zona Cero (Guatemala TV programing)
z.Hd. stands for zu Handen (German: in care of)(postal)
ZLIN stands for Developmental Line Item Number Z-LIN stands for Developmental Line Item Number (usually abbreviated ZLIN)
Z/CAL stands for Zero Calibration