1 The exhibition is a unique opportunity to see her later work. 2  A unique feature of these rock shelters was that they were dry. 3  Fingerprints are unique to every individual. 4  This is a unique opportunity to hear Mr Maitland speak in person.  This problem is not unique to learners of English.
Compact as used in politics may refer broadly to a pact or treaty; in more specific cases it may refer to: The Compact, the agreement between the government and the voluntary and community sector in England Interstate compact Blood compact, an ancient ritual of the Philippines Compact government, a type of colonial rule utilized in British North ...
A subset of the real line is compact if and only if it is both closed and bounded. This implies the following generalization of the extreme value theorem: a continuous real-valued function on a nonempty compact space is bounded above and attains its supremum. Slightly more generally, this is true for an upper semicontinuous function. (see compact space#Functions and compact spaces).