- sacral p. [TA] the most prominent anterior projection of the base of the sacrum. SYN: promontorium ossis sacri [TA], pelvic p., p. of the sacrum.
- p. of tympanic cavity [TA] a rounded eminence on the labyrinthine wall of the middle ear, caused by the first coil of the cochlea. SYN: promontorium cavi tympani [TA], tuber cochleae, tympanic p..
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a) the angle of the ventral side of the sacrum where it joins the vertebra
b) a prominence on the inner wall of the tympanum of the ear
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n.
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prom·on·to·ry (promґon-tor″e) a projecting eminence or process; for names of specific anatomical structures see under promontorium.Medical dictionary. 2011.