INDEX n.
tion, or Refractive index (Opt.), the number which expresses the ratio of the sine of the angle of incidence to the sine of the angle of refraction. Thus the index of refraction for sulphur is 2, because, when light passes out of air into sulphur, the sine of the angle of incidence is double the sine of the angle of re…
INEXTRICABLE a.
Incapable of being extricated, untied, or disentangled; hopelessly intricate, confused, or obscure; as, an inextricable knot or difficulty; inextricable confusion. Lost in the wild, inextricable maze. Blackmore.
INTERIOR a.
mits, frontier, or shore; inland; as, the interior parts of a region or country. Interior angle (Geom.), an angle formed between two sides, within any rectilinear figure, as a polygon, or between two parallel lines by these lines and another intersecting them; -- called also internal angle. -- Interior planets (Astron…
INTERPOLATE v.
f matter that is new, or foreign to the purpose of the author. How strangely Ignatius is mangled and interpolated, you may see by the vast difference of all copies and editions. Bp. Barlow. The Athenians were put in possession of Salamis by another law, which was cited by Solon, or, as some think, interpolated by him f…
INTRICATE a. 2 definitions
Entangled; involved; perplexed; complicated; difficult to understand, follow, arrange, or adjust; as, intricate machinery, labyrinths, accounts, plots, etc. His style was fit to convey the most intricate business to the understanding with the utmost clearness. Addison. The nature of man is intricate. Burke.…