unknown
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It is still unknown whether chimpanzees deliberately choose fruits with higher ethanol levels, which tend to be riper and richer in sugar that can ferment.
From Science Daily
Its future behavior remains one of the biggest unknowns in forecasts of global sea-level rise.
From Science Daily
Instead, quantum physics makes it possible to transfer information from one photon to another as long as the information itself remains unknown.
From Science Daily
Despite their unknown origins, the photographs of the Nursey album told a dramatic and detailed story.
From BBC
Dark matter has remained one of astronomy's biggest unknowns since it was first suggested.
From Science Daily
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.