noun, verb, fogged, fog⋅ging.| 1. | a cloudlike mass or layer of minute water droplets or ice crystals near the surface of the earth, appreciably reducing visibility. Compare ice fog, mist, smog. |
| 2. | any darkened state of the atmosphere, or the diffused substance that causes it. |
| 3. | a state of mental confusion or unawareness; daze; stupor: The survivors were in a fog for days after the catastrophe. |
| 4. | Photography. a hazy effect on a developed negative or positive, caused by light other than that forming the image, by improper handling during development, or by the use of excessively old film. |
| 5. | Physical Chemistry. a mixture consisting of liquid particles dispersed in a gaseous medium. |
| 6. | to cover or envelop with or as if with fog: The steam in the room fogged his glasses. |
| 7. | to confuse or obscure: The debate did little else but fog the issue. |
| 8. | to bewilder or perplex: to fog the mind. |
| 9. | Photography. to produce fog on (a negative or positive). |
| 10. | to become enveloped or obscured with or as if with fog. |
| 11. | Photography. (of a negative or positive) to become affected by fog. |
fog (fôg) Pronunciation Key
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