- Absorption
- AC
- Adiabatic
- Adsorption
- Ammonia
- Ampere
- Angstrom
- Anode
- Atmosphere
- Attenuator
- Betz
- binomial
- Bio-oil
- Biomass
- Biosphere
- BOP
- Calorific value
- Capacitance
- Casing
- Cathode
- Charged particles
- Choke
- Coalescer
- COP
- Cracker
- Cyclone
- DC
- Earth crust
- Ejector
- Electric field
- Electrolyte
- Electron
- Endothermic
- Enthalpy
- Entropy
- Exothermic
- Fermentation
- Fission
- Fracturing
- Friction
- Fusion
- Gibbs
- Gravitation
- Gravity
- Greenhouse gases
- Heat capacity
- Heat exchanger
- Heating value
- Hydrosphere
- Hysteresis
- Ion
- Isentropic
- Isobaric
- Isothermal
- Isovolumetric
- Joule
- Kinetic
- Lithosphere
- Lorentz factor
- Magnetic field
- Manifold
- Matter
- Mechanical work
- Membrane
- Mole
- Molecule
- Moment
- Moment of inertia
- Neutron
- Newton
- Nuclei
- Nucleon
- Nucleus
- Photon
- Planck
- Plankton
- Plunger
- Polytropic
- Power
- Primary energy
- Proton
- Pyrolysis
- Redox
- Refractive
- Respiration
- SCOP
- Scrubber
- SEER
- Semiconductor
- SI unit
- Stoichiometric
- Superheated
- Syngas
- Terrestrial biosphere
- Transition
- Translational
- Vacuum
- Vapour
- Volt
- Wafer
- Watt
- Yttria