3D CAD Computer Aided Design - 3D mechanical design software for SMBeeHive Acrylic case / jig design (Autodesk Fusion 360)
EDA Electronic Design Automation - PCB design software (KiCAD)
SMD Surface Mount Device
SMC Surface Mount Component
SMBee Surface Mount Bee
SMT Surface Mount Technology
PCB Printed Circuit Board
PCA Printed Circuit Assembly - A PCB populated with its components.
Via (PCB) A fabricated connection through the PCB to connect tracks between layers.
Solder pad The exposed conductive material on a PCB for soldering components to.
Fiducial A reference marker
ESD Electrostatic Discharge
MCU Micro Controller Unit
BOM Build Of Materials - the individual components that compose to a product
RoHS Restriction of Hazardous Substances directive
HASL Hot Air Surface Leveling (PCB)
IDC Insulation Displacement Connector
RCD Residual Current Device - A safety device for mains electricity supplies that breaks when a leakage current is detected. Wikipedia