China
Africa
- Unified shaders
- Unified theory of acceptance and use of technology
- Uniform Building Code
- Uniform Plumbing Code
- Uniform boundedness
- Uniform boundedness principle
- Uniform continuity
- Uniform convergence
- Uniform distribution
- Uniform memory access
- Uniform norm
- Uniform theory of diffraction
- Uniformly bounded
- Uniformly convex
- Unifrac
- Unilateral contact
- Unimodal
- Unimodular matrix
- Unimorph
- Unintended consequences
- Union
- Uniporter
- Uniprot
- Uniqueness theorem
- Unistat
- Unit cell
- Unit circle
- Unit disk graph
- Unit injectors
- Unit interval
- Unit loads
- Unit of energy
- Unit of length
- Unit of measurement
- Unit of time
- Unit of volume
- Unit operations
- Unit pump
- Unit root
- Unit root test
- Unit sphere
- Unit square
- Unit trains
- Unit vectors
- Unitary group
- Unitary matrix
- Unitary operators
- Unitary transformation
- United Nations System of National Accounts
- Units of selection
- Univariate
- Univariate analysis
- Universal Plug and Play
- Universal algebra
- Universal approximation theorem
- Universal design
- Universal dielectric response
- Universal joints
- Universal kriging
- Universal memory
- Universal quantification
- Universal testing machine
- Universal time
- Universal usability
- Universality
- Universality class
- Universe
- Unix
- Unix time
- Unmanned vehicles
- Unordered pair
- Unpaired electron
- Unpolarized light
- Unreinforced masonry buildings
- Unresolved complex mixture
- Unsaturated
- Unsaturated fats
- Unscented transform
- Unsharp masking
- Unsharpness
- Unsigned
- Unsprung mass
- Unsprung weight
- Unstable angina
- Unstable equilibrium
- Unstructured data
- Unsupervised learning
- Unsymmetrical dimethylhydrazine
- Untranslated region
- Up-and-down procedure
- Upconverting nanoparticles
- Upcycling
- Update
- Upgrader
- Upholstery
- Upilex
- Uplift
- Upper and lower bounds
- Upper and lower probabilities
- Upper bound
- Upper critical field
- Upper critical solution temperature
- Upper half-plane
- Upper limb
- Upper mantle
- Upper motor neurons
- Upper ontology
- Upper-convected time derivative
- Upregulated
- Upset welding
- Upstream
- Uptime
- Upwind scheme
- Uracil
- Uraninite
- Uranium
- Uranium carbide
- Uranium compounds
- Uranium dioxide
- Uranium hexafluoride
- Uranium market
- Uranium mining
- Uranium nitride
- Uranium ore
- Uranium oxide
- Uranium tailings
- Uranium tetrafluoride
- Uranium trioxide
- Uranium zirconium hydride
- Uranium-235
- Uranium-238
- Uranophane
- Uranyl
- Uranyl acetate
- Uranyl carbonate
- Uranyl formate
- Uranyl hydroxide
- Uranyl nitrate
- Uranyl oxalate
- Uranyl peroxide
- Uranyl sulfate
- Urate oxidase
- Urbach energy
- Urban air mobility
- Urban density
- Urban design
- Urban flooding
- Urban forest
- Urban freight distribution
- Urban green space