IGNIS FATUUS n.
A phosphorescent light that appears, in the night, over marshy ground, supposed to be occasioned by the decomposition of animal or vegetable substances, or by some inflammable gas; -- popularly called also Will-with-the-wisp, or Will-o'-the-wisp, and Jack-with-a- lantern, or Jack-o'-lantern.
INCH n.
elve parts, called lines, and originally into three parts, called barleycorns, its length supposed to have been determined from three grains of barley placed end to end lengthwise. It is also sometimes called a prime ('), composed of twelve seconds ('\'b7), as in the duodecimal system of arithmetic. 12 seconds ('\'b7)…
INFERENCE n.
That which inferred; a truth or proposition drawn from another which is admitted or supposed to be true; a conclusion; a deduction. Milton. These inferences, or conclusions, are the effects of reasoning, and the three propositions, taken all together, are called syllogism, or argument. I. Watts.
INSTANTANEOUS a.
atics), in a body which has motions both of translation and rotation, is a line, which is supposed to be rigidly united with the body, and which for the instant is at rest. The motion of the body is for the instant simply that of rotation about the instantaneous axis. -- In`stan*ta"ne*ous*ly, adv. -- In`stan*ta"ne*ou…