- Expanded bed adsorption
- Expanded clay aggregate
- Expanded metal
- Expander cycle
- Expander graphs
- Expansion
- Expansion joints
- Expansion of the universe
- Expansion ratio
- Expansion tank
- Expansion valve
- Expansive clay
- Expectation propagation
- Expectation value
- Expectation-maximization algorithm
- Expected mean squares
- Expected return
- Expected shortfall
- Expected utility
- Expected utility hypothesis
- Expected value
- Expected value of perfect information
- Expediting
- Expenditure minimization problem
- Experience sampling method
- Experimental Breeder Reactor II
- Experimental cancer treatments
- Experimental data
- Experimental drug
- Experimental pathology
- Experimental petrology
- Experimental uncertainty analysis
- Expert systems
- Expiration date
- Explainable artificial intelligence
- Explained sum of squares
- Explained variation
- Explanation-based learning
- Explanatory gap
- Explant culture
- Explants
- Explicit
- Exploded views
- Exploit kits
- Exploits
- Exploration-exploitation dilemma
- Exploratory data analysis
- Exploratory factor analysis
- Explosion vent
- Explosion welding
- Explosive booster
- Explosive detection
- Explosive lens
- Explosive limit
- Explosives
- Exponential backoff
- Exponential decay
- Exponential distribution
- Exponential family
- Exponential function
- Exponential growth
- Exponential map
- Exponential mechanism
- Exponential polynomials
- Exponential search
- Exponential smoothing
- Exponential stability
- Exponential utility
- Exponentiation
- Export
- Export control
- Exposome
- Exposure assessment
- Exposure science
- Expression cassette
- Expression vectors
- Ext2
- Ext3
- Extended aeration
- Extended discrete element method
- Extended finite element method
- Extended irreversible thermodynamics
- Extended physiological proprioception
- Extended precision
- Extended producer responsibility
- Extended reach drilling
- Extended reality
- Extended x-ray absorption fine structure
- Extensibility
- Extensional fault
- Extensional tectonics
- Extensional viscosity
- Extensionality
- Extensive-form game
- Extensively drug-resistant tuberculosis
- Extensometer
- Extensor carpi radialis brevis
- Extensor carpi radialis longus
- Extensor carpi ulnaris
- Extensor digitorum
- Extensor digitorum longus
- Extensor digitorum longus muscle
- Extensor digitorum muscle
- Extensor pollicis brevis
- Extent of reaction
- External ballistics
- External beam radiotherapy
- External carotid artery
- External combustion engines
- External fertilization
- External fixation
- External floating roof tank
- External flow
- External iliac artery
- External iliac vein
- External limiting membrane
- External render
- External sorting
- External wall insulation
- Externalities
- Externality
- Extinction coefficient
- Extinction events
- Extinction ratio
- Extra dimensions
- Extracellular fluid
- Extracellular matrix
- Extracellular signal-regulated kinases
- Extracellular space
- Extracellular vesicles
- Extrachromosomal DNA
- Extracorporeal membrane oxygenation
- Extract class
- Extraction
- Extractive industries
- Extractive metallurgy
- Extranets
- Extraocular muscles
- Extraordinary optical transmission
- Extrapolation
- Extrapyramidal
- Extravasation
- Extravehicular activity
- Extremal optimization
- Extreme environments
- Extreme learning machine
- Extreme points
- Extreme pressure additive
- Extreme ultraviolet
- Extreme value theorem