matrimony vine (matrimonivin)

A garden-plant, Lycium vulgare; also, the closely al lied L. barbarum. The latter is said to be used in medicine in Japan. matrimoynet, n. A Middle English form of matrimony. 3661 The types of two matrices are said to be complementary when ppl = q + ql. Matrix-rolling machine, in stereotyping by the paper proce , a machine sometimes used, in place of the beating-table and brush, to force the type into the prepared paper. - Nuclear matrix. See karyoplasm.- Reciprocal matrix. See inverse matrix. matron (ma'tron or matron), n. [F. matrone = Sp. Pg. It. matron a, Yet did that auncient matrone all she might To cherish her with all things choice and rare. Spenser, F. Q., VI. xii. 14. For thee the soldier bleeds, the matron mourns. Pope , Iliad, vi. 412. 2. In a special sense, a head nurse in a hospital; the female head or superintendent of any insti tution.-Jury of matrons. See jury. matronage (mat'ron-aj or matron-aj), n. [ The under scorings of young ladies' letters, a wonder even to themselves under the colder north-light of ma tronage. Lowell, Study Windows, p. 120. plants), LL. the womb, a source, origin, cause, a public register or roll, Ex. xxxiv. 19. All that openeth the matrix is mine. Hence-2. That which incloses anything, or gives origin to anything, like a womb. (a) A mold which gives form to material forced into it in a solid condition, or poured into it in a fluid state and allowed to harden before removal. (b) In coining , the intaglio formed in steel by engraving, or by driving into the metal a tool called a hub, upon which the design of the coin has been produced in relief. The steel matrix is subsequently hardened and tempered. From this matrix punches for making dies are obtained by driving into it pieces of soft steel, which, after taking form from the matrix, are in their turn hardened and tempered. The instruments used in coining thus alternately take the design in cameo and intaglio, and in order as follows: (1) cameo, the hub; (2) intaglio, the matrix; (3) cameo, the punch; (4) intaglio, IMG:content-0335.png:[ocr errors] the die. Lastly the coin is struck in came by the die. The bottom die in any stamping or drop-pre . (d) In type founding, an attachment to the mold in which the face of a type is cast, the mold proper making the body for that face. Every letter or character has its special matrix, but all the matrices of the same font are fitted to one mold. The matrix is a small flat bar of copper that has received the deeply sunken impre of the punch, or model letter cut on a rod of steel. As left by the punch it is known as a drive, or strike, or unjustified matrix. When finished and fitted to the mold it is a justified matrix. Matrices are also made by the electrotyping proce . (e) In stereotyp ing, the mold of plaster, papier maché, or other composition which is taken from types as arranged in the form, and into which the melted alloy called stereotypers' metal is poured in casting stereotype-plates. (f) In mineral. and geol., the rock in which any accidental crystal, mineral, or fo il is embedded. (g) In mining, same as gangue, 1. [Rare and incorrect.) (h) In odontog., the formative part of a mammalian tooth, consisting of a pulp and capsule. The former is converted into dentine, the latter into cement. (i) In an at., the intercellular substance: as, the matrix of cartilage, containing corpuscles; the animal matrix of bone, impregnated with mineral salts, etc. (1) In bot.: (1) That upon which a plant is fixed or from which it grows: as, lichens which grow upon a ma triz of rock. (2) Intercellular substance: as, the filaments of nostoc lie in a gelatinous matrix. 3. In math., a rectangular array of quantities, usually square: so called because considered as a mold or set of compartments into which a certain number of quantities can be put, the leaving of one of the spaces unoccupied being in effect to put zero there. The matrix is consequently spaces. The numbers in the spaces are called the cit as multiple having as dimensions as uents of the matrix. The following definitions relate to square matrices. The vertical lines of numbers are called the columns, the horizontal ones the rows. The diagonal running from the upper left hand to the lower right hand corner is called the principal diagonal. Constituents symmetrically situated with reference to the principal diagonal are said to be conjugate. A matrix in which every constituent is equal to its conjugate is said to be symmet rical; if all the constituents along each diagonal band transverse to the principal diagonal are equal, the matrix is said to be per symmetrical. The addition of matrices is so understood that the sum of two like matrices is a matrix every constituent of which is equal to the sum of the corresponding constituents of the parts. The multiplication of two like square matrices is so understood that the product is a matrix whose construction is of the kind shown in the following example: Ja,b)(A, B) _ SaA + bC , aB + bD) c, dC, D)={CA + dC, CB + dD Inverse matrix to a given matrix, the matrix of transformation from the set of variables to which the direct matrix transforms to the set from which it transforms. Also called reciprocal matrix. - Invertebrate matrix, a square matrix whose principal diagonal contains zeros. Latent roots of a matrix. See latent. - Matrix of the type qx p, a matrix with p columns and grows. His exemplary queen at the head of the matronage of this land. Burke, A Regicide Peace, i matronal (ma'tron-al or mat'ron-al), a. [=Sp. Pg. matronal = It. matronale, He had herd of the beautie and vertuous behaviour of the young Queen of Naples, the widdow of Ferdinando the younger, being then of matron all yeares of seuen and twentie. Bacon, Hist. Hen. VII., p. 218. Only, in depicting this Roman ideal of matronal chastity, Fletcher, with his wonted coarsene e of taste, has touched on very slippery ground. Fortnightly Rev., N. S., XL. 337.