| accelerator |
a mechanical device that regulates the speed of something, esp. the gas pedal of a car. [1/3 definitions] |
| 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 |
a suspension of liquid or solid particles 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] |
| ammonia |
the pungent gas formed from the chemical combination of nitrogen and hydrogen, used esp. in refrigeration and in making fertilizers. [2 definitions] |
| anesthetist |
a person, usu. a doctor or nurse, trained to administer 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 large bag made of thin material designed to inflate and be lifted off the ground when filled with hot air or a gas that is lighter than air. [1/8 definitions] |
| bead |
a small, spherical object or quantity, such as a drop of liquid or a gas bubble. [1/8 definitions] |
| belch |
to expel gas from the stomach through the mouth, in a spasmodic, noisy burst, as after eating or drinking. [1/4 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. |
| bladder |
an expandable sac or pouch in humans and animals in which gas or liquid, esp. urine, collects. [1/3 definitions] |