permeability (per"meabiliti)

[F. per méabilité = Sp. permeabilidad = Pg. permeabili dade; as permeable + -ity (see -bility ).] The property or state of being permeable. These two ends of strength and permeability are secured by partial linings of lignin. Dawson, Geol. Hist. of Plants, p. 69. Magnetic permeability, the coefficient of magnetic induction, corresponding in magnetism to the specific inductive capacity of a dielectric in electricity. See the quotation. Magnetic permeability , a synonym for conducting power for lines of magnetic force; and hydrokinetic permeability, a name for the specific quality of a porous solid according to which when placed in a moving frictionle liquid it modifies the flow. Sir W. Thomson . permeable (per'mē-a-bl), a. [= F. perméable = Sp. permeable = Pg. permeavel = It. permea bile, permeably (per'mē-a-bli), adv. In a permeable manner; so as to be permeated. permeant (per'me-ant), a. [= Pg. It. per me ante, permeate (per'mē-āt), v. t.; pret. and pp. per meated, ppr. permeating. [ It. per me are Pg. permear), = through: see permeate.] eate.] The act of permeating, or the state of being permeated. They [the three persons) are physically (if we may so speak) one also, and have a mutual inexistence, and per meation of one another. Cudworth , Intellectual System, p. 559. permeative (per'mē-ā-tiv), a. [ The rocks of which the Permian system is composed are largely red sandstone, and their equivalent in England had then been known as the New Red Sandstone, to dis tinguish it from the Old Red Sandstone, which lies beneath the Carboniferous. Eventually the New Red of England was found to be divisible (pale ontologically) into two groups, of which the older was cla ed with the Paleozoic, and the newer placed in the Mesozoic. In Germany there is a well-marked division of the Permian into two litho logically distinct groups; hence it is sometimes designated as the Dyas, a name coined in imitation of Trias. The divisions of the Permian in Germany are a lower ries of sandstones, red and mottled in color (hence the permit permi ion, The natural permi ions of concubinate were only confined to the ends of mankind, and were hallowed only by the faith and the design of marriage. Jer. Taylor , Works (ed. 1835), I., Pref. He craved a fair permi ion to depart, And there defend his marches. Tennyson, Geraint. =