Mag no sell aridæ (mag"no sel a ride)

pl. [NL., sellaris, of or belonging to a seat), + -idæ.] A family of goniatites having smooth shells, sutures with undivided ventral lobes, and a very large pair of entire lateral saddles, whence the name. Hyatt, Proc. Bost. Soc. Nat. Hist., 1883, p. 318. Preferably called Magnisellida. magnum (mag'num), n. [L. magnum, neut. of magnus, great: see magnitude.] 1. A large wine-bottle, usually twice the size of the ordinary bottle used for the same kind of wine.2. The quantity of wine contained in such a bottle: as, a magnum of port. The approbation of much more rational persons than the Scott , Waverley, x. B. club could have mustered even before the discu ion of the first magnum. 3. Pl. magna (-nä). In an at., the largest bone of the human carpus, in the distal row, between special rela the trapezoid and the unciform, in special tion with the head of the middle metacarpal bone: more fully called os magnum. It is the third carpale of a typical carpus, and is also known as capitatum, or os capitatum, from its shape in man.