EMBRYO

n. Eam'bria-o. Gr., ififipvov (n. of adj., <jx/3pvo?, growing within). Fr., embryon. Ger., E., Fruchlkeim. It., embrione. Sp., embrion. 1. That portion of a fecundated ovum which is destined to constitute an independent individual. Most writers apply this term to the product of the first two or three months or gestation in the human subject, applying the word foetus after that time. In ornithology, a young bird up to the time when it is hatched. 2. In botany, the rudimentary plant within the seed. [A, 5; B, 1, 291 (a, 24).] Abaxial e. Fr., embryon abaxile. Ger., ungleichlaufender Keim. An e. not lying in the direction of the axis of the seed. [B. 77 (a, 24).] Cf. Axial e. Adventitious e. Of Stra burger, an e. developed as an outgrowth from the cells of the nucleus which bound the embryo-sac. [B, 167 (a, 24).] Amphitropal e. Lat.. embryon amphitropum. Fr., embryon a mph it rope. Ger.,doppellaufiger Keim. Sp., embrion anfitropo. A half inverted vegetable e.; an e. so folded that its radicular and cotyledonary extremities are approximated, as in curved or campylotropal seeds. [B, 77 (a, 24).] Axial e. Fr., embryon axile. Ger., axialer Keim. In botany, an e. which lies in the axis of the seed, and has the same direction. [Mirbel (B, 1).] Dicotyledonous e. Fr.. embryon dicotyledone. Ger., dikotyledonischer Keim. An e. with a pair of cotyledons, [a, 24.] E'blaschen (Ger.). See J57.-8ACSE.-bud. See underBUD. E.-cell. See under CELL. E.-nodule. SeeJ?-BUD. E.-plant. See.E.(2ddef.). E.-sac. See under SAC. E'trager (Ger.). See CHORDA embryonal is (in the Supplement). Erect e. Fr., embryon homotrope. Ger., aufrechter Keim. Syn.: homotropal e. An e. in which, as in an anatropal seed, the radicle is directed toward the base of the seed. [B. 77 (a, 24).] Fixed e. Fr., rmbryon fixe. Ger., Keimknospchen. A leaf-bud. [B, 1, 19, 123 (a, 24).] Homotropal e. Ger., gleichlduflger Keim. See Erect e. Monocotyledonous e. Fr., embryon mono cotyle done. Ger., monokotyledonischer Keim. An e. with a single cotyledon, or, if there are two, with one so highly developed as to hide the other. [B, 291 (a, 24).] Naked e. Lat., embryon nudum. Of Ehren- ERECT EMBPYO. berg, the spore of a fungus. [B, 121 (a, 24).] [A, 442.] Oblique e. See Abaxial e. Primitive e. The collection of blastomeres which constitutes the blastoderm in the higher animals. [A, 5.] Pseudo-e. See the major list. [s. 686]