What does GRASS stand for?

Gamma Ray Ablation Sensing System (SAA)

Gas Release and Swelling Subroutine (PDAA)

Generalized Reactor Analysis Subsystem

Generalized Research Analysis Statistical System (SAUO)

General Random Audit Sample Selection Technique - Military (AFIT)

General Retrieval and Storage System (SAUS)

Geographical Resources Analysis Support System - Software - Computer science

Geographic Resources Analysis Support System - Army

Germinating Ray Acoustics Simulation System (MCD)

Gradient-Recalled Acquisition in a Steady State - Medicine (RAWO)

Grassland Research and Serengeti Systems - Model for simulation

Great Revolutionary American Standard System - Book title

Ground-to-Air Scanner Surveillance