Collinear is a 9 letter English word. It's valid Words with friends word worth 15 points.
You can make 540 anagrams from letters in collinear (aceillnor).
First recorded in 1720-30; col-1 + linear
The cross ratio of a range of four collinear points can now be defined as a number characteristic of that range.
The collinear centres are the three sets of one external and two internal centres, and the three external centres.
The half-lines r and s are collinear, and together form one complete line.
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