Definition of ARMA: Describes a stochastic process or a model of one Stands for "autoregressive moving-average" An ARMA process is a stationary one made up of sums of autoregressive and moving-average components (Econterms) Terms related to ARMA: Autoregressive Moving-average Stationary ARIMA About Com Resources on ARMA: None Writing a Term Paper? Here are a few starting points for research on ARMA: Books on ARMA: Enders, Walter 1995 Applied Econometric Time Series John Wiley and Sons, Inc Journal Articles on ARMA: None