Imperfective Aspect (definition)
From Scottish Gaelic Grammar Wiki
when a form of a verb marks the way the internal time structure of the situation viewed. This is important in Slavic languages.
See Also
External Links
http://en.wikipedia.org/wiki/Imperfective_aspect
http://www.statemaster.com/encyclopedia/Aspect-(linguistics)
References
Crystal, David. A Dictionary of Linguistics and Phonetics. The language library. Oxford, UK: Blackwell, 1997.
Crystal, David, and David Crystal. The Penguin Dictionary of Language. London: Penguin, 1999.