CRYSTALLITE n.
te mineral form like those common in glassy volcanic rocks and some slags, not having a definite crystalline outline and not referable to any mineral species, but marking the first step in the crystallization process. According to their form crystallites are called trichites, belonites, globulites, etc.…
CURVE n.
A line described according to some low, and having no finite portion of it a straight line. Axis of a curve. See under Axis. -- Curve of quickest descent. See Brachystochrone. -- Curve tracing (Math.), the process of determining the shape, location, singular points, and other perculiarities of a curve from its equati…
DEAL n.
A part or portion; a share; hence, an indefinite quantity, degree, or extent, degree, or extent; as, a deal of time and trouble; a deal of cold. Three tenth deals [parts of an ephah] of flour. Num. xv. 9. As an object of science it [the Celtic genius] may count for a good deal . . . as a spiritual power. M. Arnold. She…
DEHISCENCE n.
A gaping or bursting open along a definite line of attachment or suture, without tearing, as in the opening of pods, or the bursting of capsules at maturity so as to emit seeds, etc.; also, the bursting open of follicles, as in the ovaries of animals, for the expulsion of their contents.