^ m d. In the document, Nursing: Scope and Standards of Practice, scope of practice is defined by the âwho,â âwhat,â âwhere,â âwhen,â âwhy,â and âhowâ of nursing practice, including advanced practice nursing. In addition, there are other documents relevant to specialties.
double helix. double helix. double helix. The coiled structure of double-stranded DNA in which strands linked by hydrogen bonds form a spiral configuration, with the two strands oriented in opposite directions.
The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane. Helix (noun). a caulicule or little volute under the abacus of the Corinthian capital. Helix (noun). the incurved margin or rim of the external ear.