what is collinear
Definition of Collinear Points. Collinear points are points that lie on the same line. The word 'collinear' breaks down into the prefix 'co-' and the word 'linear'.'Co-' indicates togetherness, as in 'coworker' or 'cooperate'. 'Linear' refers to a line.So, collinear basically means points that hang out on the same line together.efinition of Collinear Points. Collinear points are points that lie on the same line. The word 'collinear' breaks down into the prefix 'co-' and the word 'linear'.