n. Same as discus, 1.n. In the Gr. Ch., a paten.n. 3. Any flat, or approximately or apparently flat, circular plate or surface.n. Specifically In botany: The flat surface of an organ, such as a leaf, in distinction from the margin.n. Any flat, circular, discus-shaped growth, as the adhesive disks which form on the tendrils of the Virginia creeper.n. In the tubuliflorous Compositæ, the series of flowers having a tubular corolla, and forming the central portion or whole of the head, as distinct from a surrounding ligulate-flowered ray; also, the central portion of any radiate inflorescencen. An enlargement of the torus of a flower about the pistil.n. A name sometimes given to the bordered pits (otherwise called dots and discoid markings) which characterize the woody tissue of gymriosperms, as the pine.n. The hymenium of a discocarp; the cup-like or otherwise expanded surface on which the asci are borne in Discomycetes.n. In zoöl, and anatomy, any flattened and rounded surface or part; a discus.n. In armor, same as roundel.n. One of the collars separating and securing the cutters on a horizontal mandrel.n. n. A small medicated gelatin tablet about of an inch thick, which contains a small amount of glycerin to prevent it from becoming hard and brittle: a simple means of applying accurately adjusted quantities of mydriatic, myotic, and anesthetic alkaloids such as atropin, physostigmine, and cocaïne to the eye.In agriculture, to cultivate with a disk-cultivator.
