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a protrusion or projection.
frontonasal prominence an expansive facial process in the embryo that develops into the forehead and bridge of the nose; called also frontonasal process.
laryngeal prominence a subcutaneous prominence at the front of the throat produced by the thyroid cartilage of the larynx; popularly known as Adam's apple.
mandibular prominence the ventral prominence formed by bifurcation of the first branchial arch (mandibular arch) in the embryo, which unites ventrally with its fellow to form the lower jaw; called also mandibular process.
maxillary prominence the dorsal process formed by bifurcation of the first branchial arch (mandibular arch) in the embryo, which joins with the ipsilateral median nasal process in the formation of the upper jaw. Called also maxillary process.
the unpaired embryonic prominence formed by the tissues surrounding the forebrain vesicle.