subtend - synchronous generator
- subtend
- subtending
- subtense
- subtense instrument
- subterranean cable
- subterranean retorting
- subterranean water
- subtotal
- subtracted time
- subtractive
- subtractive filter
- subtractive mixture
- subtractor
- subtrahend
- subtranslucent
- subtransparent
- subtriple
- subtriplicate
- subunit model
- suburban bus
- suburban railway
- suburban service
- subvariable
- subvariable spring
- subwater
- subwave
- subway
- subzero
- subzero temperature
- success-run
- success-run observer
- succession of strata
- successive
- successive approximation
- successive approximations
- successive integration
- successive shifting
- successive transitions
- successiveness
- succory