â¢ SILICA (noun). The noun SILICA has 1 sense: 1. a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechartelierite.Familiarity information: SILICA used as a noun is very rare.Dictionary entry details.ristobalite (a white mineral consisting of silica; found in volcanic rocks). lechartelierite (a mineral form of vitreous or glassy silica; formed by the melting of quartz sand (as by lightning or a meteorite)).
Besides these glands, there are many tiny glands called minor salivary glands located in your lips, inner cheek area (buccal mucosa), and extensively in other linings of your mouth and throat. Salivary glands produce the saliva used to moisten your mouth, initiate digestion, and help protect your teeth from decay.
There are six salivary glands: a pair under the tongue (glandula sublingualis), left and right under the jaw (glandula submandibularis) and left and right under the ears (glandula parotis). When starting to eat or sometimes even thinking about eating (e.g. thinking of biting a lemon) these glands produce saliva to make digesting food easier. Some people feel the glands at that point produce saliva. You apparently feel the glandula parotis do its work. Sometimes though little stones block the duct of the gland causing inflammation, swelling and pain, but inflammation can occur of its own. When there is pain and/or swelling go to a doctor.