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The passage of the corpuscular elements of the blood from the blood vessels into the surrounding tissues, without rupture of the walls of the blood vessels.

Allowing light to pass through, as porcelain; translucent or transparent; pellucid; clear. Another cloud in the region of them, light enough to be fantastic and diaphanous. Landor.

Relating to the measurement of the tactile sensibility of parts; as, diaphemetric compasses. Dunglison.

Affording a free passage to heat; as, diathermic substances. Melloni.

To pass from an animate to a lifeless state; to cease to live; to suffer a total and irreparable loss of action of the vital functions; to become dead; to expire; to perish; -- said of animals and vegetables; often with of, by, with, from, and rarely for, before the cause or occasion of death; as, to die of disease or…

lec.), a galvanometer having two coils or circuits, usually equal, through which currents passing in opposite directions are measured by the difference of their effect upon the needle. -- Differential gearing, a train of toothed wheels, usually an epicyclic train, so arranged as to constitute a differential motion. -…

The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars. Remarked by Grimaldi (1665), and referred by him to a property of light which he calle…

Material which, in the process of catalysis, has diffused or passed through the separating membrane.

To pass by spreading every way, to diffuse itself.

Capable of passing through animal membranes by osmosis.

The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.

To separate (the food) in its passage through the alimentary canal into the nutritive and nonnutritive elements; to prepare, by the action of the digestive juices, for conversion into blood; to convert into chyme.

A red crystalline nitrogenous substance or artificial production, which by reduction passes directly to indigo.

me dim! Lam. iv. 1. I never saw The heavens so dim by day. Shak. Three sleepless nights I passed in sounding on, Through words and things, a dim and perilous way. Wordsworth.

int of. Now you weep; and, I perceive, you feel The dint of pity. Shak. It was by dint of passing strength That he moved the massy stone at length. Sir W. Scott.

t; that part of geometrical optics which treats of the laws of the refraction of light in passing from one medium into another, or through different mediums, as air, water, or glass, and esp. through different lenses; -- distinguished from catoptrics, which refers to reflected light.

Including two passovers. Carpenter.

A very dangerous contagious disease in which the air passages, and especially the throat, become coated with a false membrane, produced by the solidification of an inflammatory exudation. Cf. Group.

cal axis; -- distinguished from elevation. The direction is given when the plane of sight passes through the object. Wilhelm.

the first republic. See Directory, 3. Whoever goes to the directorial presence under this passport. Burke.