n. (Chem.) A salt of metasilicic acid. [ 1913 Webster ]

a. [ Pref. meta- + silicic. ] (Chem.) Designating an acid derived from silicic acid by the removal of water; of or pertaining to such an acid. [ 1913 Webster ]

☞ The salts of metasilicic acid are often called bisilicates, in mineralogy, as Wollastonite (CaSiO3). [ 1913 Webster ]

Metasilicic acid (Chem.), a gelatinous substance, or white amorphous powder, analogous to carbonic acid, and forming many stable salts. [ 1913 Webster ]

n. [ Pref. meta- + Gr. &unr_;, &unr_;, body. ] (Geol.) An alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine; -- opposed to ordinary metamorphism, as implying simply a recrystallization. -- Met`a*so*mat"ic a. [1913 Webster]

n. [ Pref. meta- + -some body. ] (Zool.) One of the component segments of the body of an animal. [ 1913 Webster ]

n. (Chem.) A salt of metastannic acid. [ 1913 Webster ]

a. (Chem.) Pertaining to, or designating, a compound of tin (metastannic acid), obtained, as an isomeric modification of stannic acid, in the form of a white amorphous substance. [ 1913 Webster ]

n.; pl. Metastases [ L., transition, fr. Gr. &unr_;, fr. &unr_; to place in another way; &unr_; after + &unr_; to place. ] 1. (Theol.) A spiritual change, as during baptism. [ 1913 Webster ]

2. (Med.) A change in the location of a disease, as from one part to another. Dunglison. [ 1913 Webster ]

3. Especially: The migration of cancerous or malignant cells from the site of their origin to other parts of the body. Such cells may migrate to multiple new locations, making therapy more difficult and often leading to death. [ PJC ]

4. (Physiol.) The act or process by which matter is taken up by cells or tissues and is transformed into other matter; in plants, the act or process by which are produced all of those chemical changes in the constituents of the plant which are not accompanied by a production of organic matter; metabolism. [ 1913 Webster ]

v. to spread from one part of the body to other parts, and grow there; to spread by metastasis{ 3 }; -- said of cancer cells. [ WordNet 1.5 ]

a. Of, pertaining to, or caused by, metastasis; as, a metastatic abscess; the metastatic processes of growth; a metastatic tumor. [ 1913 Webster ]

a. Of or pertaining to the metasternum. [ 1913 Webster ]