| afterburner |
a device for burning partially burned carbon compounds in the exhaust fumes of an internal-combustion engine. [1/2 definitions] |
| alternative fuel |
a fuel other than fossil fuel used to power an internal combustion engine. |
| animal magnetism |
an internal biological force supposed by Franz Mesmer to induce hypnotism in others; biomagnetism. |
| antiknock |
reducing or preventing knocking in an internal combustion engine, by being added to the gasoline. |
| atrium |
in anatomy, any internal cavity, esp. one of the two upper heart chambers. [1/2 definitions] |
| autonomic |
in biology, caused by internal forces or conditions; spontaneous. [1/3 definitions] |
| backfire |
to emit a loud noise as the result of inefficient functioning of the engine of a car or other internal-combustion vehicle. [2/4 definitions] |
| body clock |
(non-technical) the internal mechanisms that regulate bodily functions; Circadian rhythm. [1/2 definitions] |
| bomb |
a portable container which ejects gas, foam, or poison by way of its own internal pressure. [1/8 definitions] |
| bony |
having an internal skeletal system partly or wholly made up of bone. [1/4 definitions] |
| burst |
to break, open up, or explode suddenly, usu. because of internal pressure. [1/8 definitions] |
| capillary |
pertaining to or occurring in, or as though in, a tube with a very small internal diameter. [1/6 definitions] |
| carburetor |
a device in an internal-combustion engine that produces a combustible mixture of vaporized fuel and air. |
| choke |
to enrich the fuel mixture of (an internal-combustion engine) by reducing the flow of air to the carburetor. [1/9 definitions] |
| coelenterate |
any of numerous invertebrate animals that have tentacles around the oral opening and a single internal cavity for various bodily functions, such as the jellyfishes, anemones, and corals. |
| compression |
the reduction in volume and increase in pressure of air or air mixed with fuel in the cylinder of an internal combustion engine prior to ignition, or the engine cycle in which this process takes place. [1/3 definitions] |
| compression ratio |
in an internal-combustion engine, the ratio of the largest to the smallest volume of a cylinder measured at the top and bottom of the piston stroke. |
| cupping |
a therapeutic procedure of former times in which a cup was placed over skin and a partial vacuum formed in it to draw blood to or out of the skin, used to treat ailments like internal congestion. |
| cuttlebone |
the internal shell of cuttlefish, used as food for pet birds and, in powdered form, for polishing. |
| cuttlefish |
any of several mollusks with calcified internal shells and ten tentacles attached to the head. |
| cylinder head |
of the cylinder in an internal-combustion engine, the closed, often detachable end opposite to that from which the piston or connecting rod projects. |