A-CELP stands for Algebraic-Code Excited Linear Prediction
A-FSM stands for Adaptation Finite State Machine (algorithms)
A-E stands for Architect-Engineer
A-ECM stands for Augmented Equivalent Circuit Model (microwave devices)
A-EMCA stands for Advanced-Emergency Medical Care Assistant
A-ENWG stands for Ada-Europe Numerics Working Group (est. 1984)
A-LCMR stands for Advanced Lightweight Counter Mortar Radar (US Army)
A-MASS stands for Animal Module for Autonomous Space Support
a-CAE stands for antibodies to citric acid muscle extract
A-IE stands for Aperture Integral Equation