| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
|---|---|
| SRU | sample ratio units; side rails up; solitary rectal ulcer; structural repeating unit |
| U/l | units per liter |
| UMT | units of medical time |
| UOV | units of variance |
| intensive care units, neonatal | Hospital units providing continuing surveillance and care to acutely ill newborn infants. (12 Dec 1998) |
|---|---|
| intensive care units, paediatric | Hospital units providing continuous surveillance and care to acutely ill infants and children. Neonates are excluded since intensive care units, neonatal is available. (12 Dec 1998) |
| international system of units | A system of physical units in which the fundamental quantities are length, time, mass, electric current, temperature, luminous intensity, and amount of substance, and the corresponding units are the meter, second, kilogram, ampere, kelvin, candela, and mole. The system has been given official status and recommended for universal use by the general conference on weights and measures. (12 Dec 1998) |
| units | <physics> Standard quantities of measurement which are specific to a type of measurement, i.e. The metre is the standard unit of measurement for length in the MKS system of measurement. (see also SI unit, MKS, CGS) (09 Oct 1997) |