| accelerator |
a mechanical device that controls the speed of something, especially the gas pedal of a car. |
| acetylene |
a highly flammable colorless gas used esp. to cut and weld metal and to give light. |
| adsorb |
to gather (a gas or liquid) to a surface. (Cf. absorb.) |
| adsorption |
the condensation or adhesion of a gas, vapor, liquid, or dissolved substance on the surface of a solid or liquid. (Cf. absorption.) |
| aerate |
to fill or charge (a liquid) with a gas, esp. carbon dioxide. [1/3 definitions] |
| aero- |
gas. [1/3 definitions] |
| aerosol |
liquid or solid particles suspended in a gas. [1/2 definitions] |
| aerostat |
an aircraft, such as a balloon or dirigible, that is lifted and held aloft by a gas that is lighter than air. |
| afterdamp |
a suffocating gas or mixture of gases that remains in a mine after a methane explosion or fire. |
| air hole |
an opening for the intake or discharge of air or gas. [1/3 definitions] |
| airship |
an aircraft that is lighter than air and can be steered. An airship has an engine and is filled with gas. |
| ammonia |
a liquid with a strong smell made from a chemical gas and water. Ammonia is used in some cleaning products and in fertilizers. |
| anesthetist |
a person, usually a doctor or nurse, trained to give gas or drugs that cause lack of sensation or loss of consciousness. |
| arc lamp |
a lamp, such as a searchlight, in which light is produced by an electric arc passing through a gas between two hot electrodes; arc light. |
| Argand burner |
an oil or gas burner having a metal tube inside a cylindrical wick, through which air is conducted directly to the flame. |
| argon |
a chemical element of the inert gas group that has eighteen protons in each nucleus. (symbol: Ar) |
| aspirator |
a device that removes gas or fluids by suction, esp. one used to evacuate a body cavity. |
| balloon |
a small bag made of thin material that is filled with air or some other gas and used as a decoration or toy. |
| bead |
any small, round object, such as a drop of liquid or a gas bubble. [1/3 definitions] |
| belch |
to release gas from the stomach through the mouth in a noisy burst; burp. [1/3 definitions] |
| blackdamp |
a suffocating gas composed of carbon dioxide and nitrogen, found as a residue of fires and explosions of combustible gases in mines; chokedamp. |