INTERNAL-COMBUSTION; INTERNAL-COMBUSTION ENGINE a. 2 definitions
l), naphtha, oil (petroleum), etc. There are three main classes: (1) gas engines proper, using fixed gases, as coal, blast-furnace, or producer gas; (2) engines using the vapor of a volatile fluid, as the typical gasoline (petrol) engine;
INVISIBLE a. 4 definitions
le, or dimly seen In these thy lowest works. Milton. Invisible bird (Zoöl.), a small, shy singing bird (Myadestes sibilons), of St. Vincent Islands. -- Invisible green, a very dark shade of green, approaching to black, and liable to be mistaken for it.
ISOMETRIC; ISOMETRICAL a. 2 definitions
pective. -- Isometrical projection, a species of orthographic projection, in which but a single plane of projection is used. It is so named from the fact that the projections of three equal lines, parallel respectively to three rectangular axes, are equal to one another. This kind of projection is principally used in…