What does whiteout mean?
Whiteout is a noun for a weather condition in which blowing or falling snow reduces visibility to an almost complete white blank, making it difficult or impossible to see landmarks, roads, or other objects. The word is especially common in forecasts, travel reports, aviation, and accounts of polar or mountain weather, where “whiteout conditions” describes the dangerous combination of snow, wind, and poor visibility. It can also refer more broadly to a sudden, severe loss of visibility caused by snow or spray. Whiteout is not simply another name for a blizzard: a blizzard emphasizes heavy snowfall and strong winds, whereas a whiteout emphasizes the resulting visual obscuration. In ordinary conversation, the term conveys both the physical conditions and the associated difficulty of navigation. It is a transparent English compound, with white referring to the all-encompassing appearance of the scene and out suggesting that the surrounding world is erased from view.
nounA weather condition in which falling or blowing snow, or sometimes spray, so obscures visibility that the surrounding landscape disappears into an almost uniform white haze. The term is also used for a sudden and severe loss of visibility caused by such conditions.
- A weather condition in which blowing or falling snow, or spray, severely obscures visibility and makes the surrounding landscape appear almost uniformly white.
"The mountain pass was closed after a whiteout made the road impossible to see."
"Visibility dropped to almost zero during the whiteout, and the search team had to wait for clearer conditions."
"The road was closed because of whiteout conditions in the passes."
The plural is used for separate whiteout events or for multiple reported occurrences.
"The region experienced several whiteouts during the unusually severe winter."
A whiteout doesn't just hide the horizon; it can erase the world in a single field of white.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does whiteout come from?
The word is an English compound formed from “white” and “out.” Its development reflects the metaphorical idea of the outside world being covered or concealed by whiteness. It became established in English in meteorological and travel contexts, particularly for descriptions of severe snow and the loss of visibility it causes. As a compound, it does not have a separate inherited cognate set, though its elements also appear in related English words such as “whiten” and “whitewash.”
How whiteout is actually used
The word is chiefly used in weather, aviation, transport, and outdoor-safety contexts. It is often used with “conditions” and can refer figuratively to a sudden loss of visibility or clarity, although that extended use is less formal.
Easily confused with whiteout
“Whiteout” is the standard spelling, while “whitout” is a recognized variant spelling used especially in North America.