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-s. in a line, a surface, or the construction of a solid body.
- Krönig steps extension of the lower part of the right border of absolute cardiac dullness in hypertrophy of the right heart.
- Røonne nasal s. a nasal visual field defect with one margin corresponding to the retinal horizontal medium; seen in glaucoma.
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Sequential Test of Educational Progress; serial transverse enteroplasty [pre-STEP; post-STEP]; simultaneous transmission-emission protocol; Study of Taprostene in Elective Percutaneous Transluminal Coronary Angioplasty
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(step) one of a series of foot rests on different levels, or a structure resembling it.Medical dictionary. 2011.