AENOR	Asociación Española de Normalización y Certificación; Spanish Association for Standardization and Certification
AI	Artificial Intelligence
ALM	Additive Layer Manufacturing
AM	Additive Manufacturing
ASTM	ASTM International “American Society for Testing and Materials”
DDM	Direct Manufacturing, Direct Digital Manufacture
DMD	Direct Metal Deposition
EIDUNED	Escuela Internacional de Doctorado de la Universidad Nacional de Educación a Distancia; International Doctorate School of the Spanish National Distance-Learning University
FDM	Fused deposition modelling
FECYT	Fundación Española para la Ciencia y Tecnología; Spanish System for Science, Technology and Innovation
FFF	Freeform Fabrication
ICTs	Information and Communication Technologies
INE	Instituto Nacional de Estadística; National Statistics Institute
ISO	International Organization for Standardization
TC 261	Technical Committee 261
LOM	Laminated Object Manufacturing
R&D + I	Research, Development, and Innovation
RM	Rapid Manufacturing
RP	Rapid Prototyping
SFF	Solid Freeform Fabrication
SLA	Stereolithography
SLM	Selective Laser Modelling
SLS	Selective Laser Sintering
STEAM	Science, Technology, Engineering, Arts, and Mathematics
UNED	Universidad Nacional de Educación a Distancia; Distance Learning University