Subcutaneous
Beneath the skin.
Sublabial
Below the lips or labium.
Subsellar
Extending below the sella turcica.
Supraorbital
Above the orbit.
Suprasellar
Extending above the sella turcica.
Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH)
Impaired water excretion.
Systemic
Circulating throughout the body.