arm

arm (ahrm)

1. brachium; the part of the upper limb from the shoulder to the elbow.

2. in common usage, the entire upper limb.

3. a slender part or extension that projects from a main structure.

4. chromosome a.

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chromosome arm  either of two segments of a chromosome separated by the centromere.

Chromosome arms.

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arm (ärm)

n.

An upper limb of the human body, connecting the hand and wrist to the shoulder.

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arm,

n an extension or projection of a removable partial denture framework.

arm, neutral position of,

n a body position to be assumed while treating a patient that prevents cumulative trauma to the arm; incorporates proper placement of the wrist, elbow, and shoulder.

arm, reciprocal,

n a clasp arm used on a removable partial denture to oppose any force arising from an opposing clasp arm on the same tooth. See also arm, retention.

arm, retention,

n an extension or projection that is part of a removable partial denture and is used to aid in the retention and stabilization of the restoration. See also retainer divet.

arm, truss,

n See connector, minor.

arm, upright,

n See connector, minor.

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arm

1. the limb segment between the shoulder and elbow joints; sometimes called the upper arm as distinct from the lower arm which is the section from elbow to carpus.

2. loosely, the free part of the thoracic limb, especially of bipeds.