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.
The parotid glands are located in front of the ears; the submandibular glands are under the mandible (the lower jaw); and the sublingual glands are under the tongue. Most of the mucosal surfaces within the mouth also contain many minor mucus-secreting salivary glands.land, salivary: One of the glands in the mouth that produce saliva. There are 3 major salivary glands. They are the parotid, submandibular, and sublingual glands. Each of these glands is paired; there is one parotid gland on each side of the head, etc.