Soybean Cyst Nematode. Small roundworms, Heterodera glycines, that cause root damage and subsequent above-ground symptoms to soybeans. This nematode is found in 27 states in the U.S. and causes the greatest yield losses of any pathogen of soybeans. Sixteen physiological races of the nematode have been identified. Management of SCN is achieved by planting resistant varieties to a given race or races and by rotating soybeans with a non-host crop such as field corn. Nematicides can also be used to reduce populations.

Scientology

an acronym for suprachiasmatic nuclei and sometimes called the endogenous circadian pacemaker; small structures in the brain, sensitive to the presence or absence of light, that coordinate circadian rhythms.

Special Care Nursery. See Neonatal Intensive Care Unit (NICU)

Scottish Candidate Number

System Change Number. The SCN is a number that identifies each change to the database. The SCNs are used during the checkpoint process, recovery process, and during point-in-time recovery.

Service Contract Number. A Maintenance Agreement between Vendor and Customer, which entitles the customer to receive technical support and other maintenance benefits throughout the duration of the agreement, providing the contract remains active.

Switched Circuit Network. A public or private switched telecommunications network such as GSTN or ISDN.

Switched Circuit Network. Synonym for the Public Switched Telephone Network.

Switched circuit network. A network that carries traffic within channelized bearers of predefined sizes.

Compressed Screen format or TrueSpace2 Scene

Secure Communication Node