n. [ Endo- + -gen: cf. F. endogène. ] (Bot.) A plant which increases in size by internal growth and elongation at the summit, having the wood in the form of bundles or threads, irregularly distributed throughout the whole diameter, not forming annual layers, and with no distinct pith. The leaves of the endogens have, usually, parallel veins, their flowers are mostly in three, or some multiple of three, parts, and their embryos have but a single cotyledon, with the first leaves alternate. The endogens constitute one of the great primary classes of plants, and included all palms, true lilies, grasses, rushes, orchids, the banana, pineapple, etc. See Exogen. [ 1913 Webster ]

‖n. [ Endo- + genesis. ] (Biol.) Endogeny. [ 1913 Webster ]

adj. 1. (Biol.) Relating to or arising from an internal process; same as endogenous.
Syn. --. [ WordNet 1.5

2. (Geol.) Relating to the interior of the earth; of or pertaining to a metamorphic process occurring within a planet. Opposed to exogenetic.
Syn. -- endogenic. [ PJC ]

a. 1. (Bot.) Increasing by internal growth and elongation at the summit, instead of externally, and having no distinction of pith, wood, and bark, as the rattan, the palm, the cornstalk. [ 1913 Webster ]

2. (Biol.) Originating from within; increasing by internal growth. [ 1913 Webster ]

Endogenous multiplication (Biol.), a method of cell formation, seen in cells having a cell wall. The nucleus and protoplasm divide into two distinct masses; these in turn become divided and subdivided, each division becoming a new cell, until finally the original cell wall is ruptured and the new cells are liberated (see Segmentation, and Illust. of Cell Division, under Division). This mode of growth is characteristic of many forms of cells, both animal and vegetable. [ 1913 Webster ]

adv. By endogenous growth. [ 1913 Webster ]

n. [ See Endogenesis. ] (Biol.) Growth from within; multiplication of cells by endogenous division, as in the development of one or more cells in the interior of a parent cell. [ 1913 Webster ]