Meaning : (physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber).
Synonyms : muscle contraction, muscular contraction
Meaning : The process or result of becoming smaller or pressed together.
							Example : 
							The contraction of a gas on cooling.
							
Synonyms : compression, condensation
Meaning : A word formed from two or more words by omitting or combining some sounds.
							Example : 
							`won't' is a contraction of `will not'.
							`o'clock' is a contraction of `of the clock'.
							
Meaning : The act of decreasing (something) in size or volume or quantity or scope.