- Elliptic functions
- Elliptic geometry
- Elliptic integrals
- Elliptic orbit
- Elliptical
- Elliptical orbits
- Elliptical polarization
- Ellipticine
- Ellman's reagent
- Elm327
- Elongation factor
- Elution
- Elutriation
- Eluvium
- Email address
- Email box
- Email client
- Email encryption
- Email filtering
- Email marketing
- Email spoofing
- Embankment
- Embankment dam
- Embarrassingly parallel
- Embedded
- Embedded C
- Embedded C++
- Embedded SQL
- Embedded controller
- Embedded database
- Embedded emissions
- Embedded operating systems
- Embedded software
- Embedded system
- Embedding
- Embedment
- Embodied agents
- Embodied carbon
- Embodied cognition
- Embodied cognitive science
- Embodied energy
- Embolectomy
- Embolism
- Embolization
- Embolus
- Embossed
- Embossing
- Embrittlement
- Embryo
- Embryoid body
- Embryonic death
- Embryonic development
- Embryonic stem cells
- Emerald
- Emeralds
- Emergency bleeding control
- Emergency department
- Emergency evacuation
- Emergency management
- Emergency medicine
- Emergent
- Emerging infectious diseases
- Emery
- Eminence
- Emission
- Emission intensity
- Emission inventory
- Emission spectrum
- Emission standards
- Emission test cycle
- Emissions targets
- Emissions trading
- Emissivity
- Emitter follower
- Emmetropia
- Emollients
- Emoticons
- Emotion recognition
- Emotional lability
- Emotions
- Emotions in decision-making
- Empathic design
- Empathy
- Empennage
- Emphasis
- Empirical Bayes
- Empirical distribution function
- Empirical formula
- Empirical likelihood
- Empirical model
- Empirical modelling
- Empirical probability
- Empirical process
- Empirical risk minimization
- Empirical software engineering
- Emplaced
- Employment rate
- Empowerment
- Empty graph
- Empty string
- Empty weight
- Empyema
- Emu oil
- Emulsified fuel
- Emulsion dispersion
- Emulsion polymerization
- Emulsions
- En route
- Enabling
- Enactivism
- Enamel
- Enamel hypoplasia
- Enamel paint
- Enamine
- Enantiomeric excess
- Enantiomers
- Enargite
- Encapsulation
- Encased
- Encasement
- Encephalitis
- Encephalopathy
- Encircled energy
- Encoder
- Encryption
- Encryption software
- End artery
- End correction
- End effector
- End group
- End mills
- End organ damage
- End-systolic volume
- End-to-end delay
- End-to-end distance
- End-to-end encryption
- End-user computing
- End-user development
- Endarterectomy
- Endcapping
- Endergonic
- Endmember
- Endmills
- Endo agar
- Endocardial
- Endocarditis
- Endochondral ossification
- Endocrine
- Endocrine diseases