noun, Geology.
the assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth’s crust.
the silicon-rich and aluminium-rich rocks of the earth’s continental upper crust, the most abundant individual rock being granite


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  • Sialadenitis

    [sahy-uh-lad-n-ahy-tis] /ˌsaɪ əˌlæd nˈaɪ tɪs/ noun, Pathology. 1. inflammation of one or more of the salivary glands. sialadenitis si·a·lad·en·i·tis (sī’ə-lād’n-ī’tĭs) or si·a·lo·ad·e·ni·tis (sī’ə-lō-ād’n-) n. Inflammation of a salivary gland.

  • Sialadenosis

    sialadenosis si·a·lad·e·no·sis (sī’ə-lād’n-ō’sĭs) n. Enlargement of the salivary glands, usually the parotids, often seen in conditions such as alcoholism and malnutrition.

  • Sialagogic

    adjective 1. encouraging salivary flow. noun 2. sialagogue (def 2).

  • Sialagogue

    adjective 1. sialagogic (def 1). noun 2. a sialagogic agent or medicine. noun 1. (med) any drug or agent that can stimulate the flow of saliva sialagogue si·al·a·gogue or si·al·o·gogue (sī-āl’ə-gôg’) n. A drug or other agent that increases the flow of saliva. Also called ptyalagogue.

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