- terrestrial atmosphere
- terrestrial telescope
- tertiary particle
- test bay
- test chamber
- test channel
- teraohm
- terminal block
- terminal strip
- terminal tower
- terminating
- ternary
- terrain echoes
- terrestrial planet
- tertiary
- test circuit
- test clip
- test floor
- test freezer
- test gas
- test jack
- test lead
- test loop
- test method
- test pattern
- test period
- test rig
- test shield
- test stand
- testing procedure
- tetraethylene glycol
- tetrode
- thaw
- thaw mechanism
- thawed
- thawed state
- thawed tissue
- thawing fluid
- thawing tank
- thawing technique
- themophone
- theorem
- theoretical displacement
- theoretician
- therapy
- thermal agitation
- thermal behaviour
- thermal breakdown
- thermal cell
- thermal circulation
- thermal conductor
- thermal contraction
- thermal coulomb
- thermal degradation
- thermal diffusion
- thermal distortion
- thermal emissivity
- thermal equilibrium
- thermal exchange
- thermal farad
- thermal horsepower
- thermal microphone
- thermal motion
- thermal quantities
- thermal shock
- testboard
- tester
- testing equipment
- testing joint
- tetrad
- tetrafluoroethylence
- tetratomic
- tetrode transistor
- thaw indicator
- thaw needle
- thaw rigor
- thawing compartment
- thawing cycle
- thawing method
- thawing time
- thawing vat
- themonegative
- theodolite
- theoretical treatment
- therapeutics
- thermal
- thermal arrest
- thermal communication
- thermal conductometry
- thermal cutout
- thermal decomposition
- thermal detector
- thermal diffusivity
- thermal dilatation
- thermal dissipation
- thermal effusion
- thermal element
- thermal fatigue
- thermal flux
- thermal hysteresis