List of Abstract Nouns: i

1. idea
2. inch A concept of measuring unit that is an imperial unit of linear measure of one twelfth of a foot and is approximately equal to 2.54 centimetres.last updated 4/15/2015
   http://en.wikipedia.org/wiki/Inch last updated 4/15/2015
3. intelligence
4. isosceles triangle An abstract concept of a two dimensional geometric figure that is a plane shape with three straight sides of only two adjacent sides equal in length.last updated 4/16/2015
   http://en.wikipedia.org/wiki/Isosceles_triangle last updated 4/16/2015