step

step

1. In dentistry, a dove-tailed or similarly shaped projection of a cavity prepared in a tooth into a surface perpendicular to the main part of the cavity for the purpose of preventing displacement of the restoration (filling) by the force of mastication. 2. A change in direction resembling a stair-step in a line, a surface, or the construction of a solid body.
Krönig's s.'sextension of the lower part of the right border of absolute cardiac dullness in hypertrophy of the right heart.
Roonne's nasal s.a nasal visual field defect with one margin corresponding to the retinal horizontal medium; seen in glaucoma.

 

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