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Engineering English Dictionary

461 essential engineering terms — every entry rated 10/10 for usage frequency in the Engineering English library of 7,806 terms. Each entry includes IPA pronunciation, a working definition, a real example sentence, workplace context, a practice scenario and translations in 21 languages. More entries are published as the library grows — how entries are written and ranked.

Last updated: July 30, 2026

What is this? A free engineering dictionary built from the Engineering English iOS app: the 461 most essential terms across 20 engineering disciplines, with pronunciation, definitions, examples and 21-language translations.

No matching term — try the discipline glossaries.

Aerospace Engineering (15)

Aerodynamics Center of Gravity Control Law Drag Fastener Finite Element Analysis Full Authority Digital Engine Control Hydraulic Pump Induced Drag Leading Edge Lift Longeron Skin Thrust Trailing Edge

Biomedical Engineering (1)

Medical Device

Chemical Engineering (31)

4-20 mA Current Loop Activity Coefficient Actuator ALARP Arrhenius Equation Bottoms Centrifugal Pump Chemical Reaction Continuity Equation Control Valve Convection Distributed Control System (DCS) Final Control Element Fugacity Gibbs Free Energy Heat Exchanger Heat Transfer Coefficient Henry's Law Ideal Gas Law Operating Line Process Safety Management Raoult's Law Rate Constant Rate Law Reaction Mechanism Reactor Relative Volatility Reynolds Number Safety Instrumented System Temperature Transmitter Turbulent Flow

Civil Engineering (42)

Anchor Bolt Annual Average Daily Traffic (AADT) Beam Bolt Building Information Modeling Capacity Cement Column Concrete Design Speed Direct Stiffness Method Effective Stress Equivalent Single Axle Load (ESAL) Factor of Safety Fillet Weld Finite Element Method Foundation Fundamental Period Geometric Design GNSS Hydrograph Manning's Equation Modulus of Elasticity Peak Ground Acceleration Pore Water Pressure Prestress Force Prestressing Steel Purlin Rainfall Intensity Rational Method Runoff Shop Drawing Signalized Intersection Standard Penetration Test Stirrup Traffic Volume Tunnel Boring Machine Tunnel Lining Water Content Watershed Weld Yield Strength

Electrical Engineering (39)

Average Power Battery Management System Boost Converter Buck Converter Cable Fault Locator Circuit Breaker Continuity Test Current Equivalent Circuit Frequency Frequency Response Generator Governor Ground Fault Circuit Interrupter Grounding Electrode IGBT Input Impedance Interrupting Rating Load Flow Low Voltage Ride-through Multimeter Norton's Theorem Output Impedance Overhead Line Phasor Potential Transformer PWM Resistance Resonance RMS SCADA Shunt Capacitor Bank Squirrel Cage Rotor State of Charge Synchronous Speed Thevenin's Theorem Transformer Voltage Voltage Source Inverter

Electronics Engineering (43)

ALU Band Gap BGA CAN Bus Capacitor Closed-loop Gain Critical Path Design Rule Check Diode Doping Duty Cycle Ethernet Full Adder Integrated Circuit Interrupt Service Routine Inverting Amplifier Line Impedance Stabilization Network Linear Regulator Mutex Non-inverting Amplifier Open-loop Gain P-n Junction Pre-compliance Testing Printed Circuit Board Propagation Delay Reference Voltage Resistor RTOS Semiconductor Setup Time Slew Rate Spectrum Analyzer Stack Stack Pointer State Machine Switching Frequency Task Threshold Voltage Transistor USB Voltage Divider Wi‑Fi Worst-case Execution Time (WCET)

Energy Engineering (21)

Balance of System Battery Capacity Blade Pitch Coefficient of Performance Dam Day-ahead Market Distribution System Operator Economic Dispatch Energy Consumption Energy Monitoring System Head Lubrication System Maximum Power Point Tracking Pitch Control Power Generation Power Plant R-value Renewable Energy Tower Transmission System Operator Variable Frequency Drive

Engineering Fundamentals (45)

Area Bending Moment Compression Compressive Strength Conversion Factor Deformation Differentiation Dimension Line Elastic Modulus Equations of Motion Force Free Body Diagram Hooke's Law Length Linear Equation Load Mass Material Measurement Note Numerical Integration Part Number Partial Derivative Pressure Problem Definition Reaction Shear Force Speed Stress Stress-strain Curve System Temperature Tensile Strength Thread Time Truss Uniformly Distributed Load Unit Unit Conversion Unit System Vector Volume Weight Yield Point Young's Modulus

Engineering Project Management (4)

Contract Project Project Manager Schedule

Engineering Safety (6)

Accident Incident Occupational Safety Personal Protective Equipment Risk Assessment Scaffolding

Environmental Engineering (6)

Air Pollution Reverse Osmosis Wastewater Treatment Water Main Water Meter Water Treatment

Industrial Engineering (20)

Defect Defects Waste DMAIC Enterprise Resource Planning ERP Forklift Gross-to-net Explosion Item Master Logistics Mean Muda Normal Time Overproduction Pull System Receiving SKU Stock Keeping Unit Supply Chain Work Center Work Order

Manufacturing Engineering (26)

Adaptive Clearing Cavity Cutting Force Cutting Insert Cycle Time End Mill Extruder Filament Fused Deposition Modeling Glass Transition Temperature Heat Input Laser Powder Bed Fusion Machine Tool Machining Nozzle Overall Equipment Effectiveness Robot Controller Shielding Gas Slicer Slicing STL File Surface Speed Tempering Throughput Tool Life Welding

Materials Engineering (20)

ABS Alloy Austenite Cooling Rate Corrosion Resistance Diffusion Failure Mode Fatigue Life Fatigue Test Fracture Mechanics Martensite Melt Temperature Nylon Optical Microscopy Plastic Deformation Polyethylene Scanning Electron Microscopy Steel Stress Intensity Factor Visual Inspection

Mechanical Engineering (38)

Bearing Bore Brayton Cycle Carnot Cycle Compression Ratio Cylinder Head Diesel Cycle ECU Engine Block Fatigue Flow Rate Frequency Response Function Gear Gear Ratio Horsepower Impeller Isentropic Efficiency Link Natural Frequency Nominal Pipe Size (NPS) Octane Rating Otto Cycle Pin Joint Pressure Drop Pressure Ratio Pressure Relief Valve Rankine Cycle Refrigerant Resonant Frequency Roller Chain Rotor Imbalance Strain Timing Belt Torque Vapor Compression Cycle Vibration Monitoring Vibration Severity Von Mises Stress

Mechatronics & Robotics (28)

A* Algorithm Autonomous Navigation Brushless DC Motor Closed-Loop Control Coil Contact Control Loop Control System Current Loop Denavit-Hartenberg Parameters Error Signal Gearbox Human-robot Interaction Inverse Dynamics Joint Torque Kalman Filter Loop Gain PID Controller Programmable Logic Controller Pulse Width Modulation RANSAC Real-time Control Resolution Robot Rung Servo Drive Setpoint Tool Center Point

Quality, Testing & Inspection (10)

Acceptance Criteria Accuracy Calibration Control Chart Non-Destructive Testing Precision Quality Assurance Quality Control Tensile Test Ultrasonic Testing

Software Engineering (63)

Algorithm Angular API Array Assertion Asymptotic Notation Async/await Big O Notation Binary Search Breakpoint Brute Force Attack CI/CD Pipeline Commit Consensus Algorithm Container Image Cross-Origin Resource Sharing (CORS) Cross-site Scripting Database Database Schema Debugging Dependency Inversion Principle Diff Docker Environment Execution Plan Flexbox Foreign Key Function Git Git Pull Git Push Git Status Infrastructure as Code Input Validation Jest Join Kanban Board Kubectl Kubernetes Loop MVC Node OAuth Observability Phishing Pod Primary Key Principle of Least Privilege Privilege Escalation Product Owner Promise Publish-Subscribe Quicksort Ransomware Scrum Master Server Singleton Space Complexity SQL Injection Stand-up Meeting Test Automation TLS Version Control

Tools, Equipment & Measurements (3)

Screwdriver Technical Drawing Wrench

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