- sub-linear function
- sublinear function
- sublinear functional
- sublinear operator
- sublingual gland
- sublingual tablets
- sublingual veins
- sublink
- sublocale
- subloop
- subluminal speed
- subluminous star
- sublunar point
- Subluxation of the radial head
- submairne gamma-ray spectrometer
- submajorization
- submandibular gland
- submanifold
- submanifold geometry
- submanifold tangent space
- submarine active volcano
- submarine anti-ship missile
- submarine canyon
- submarine collapse
- submarine control network