diagonal
A Word with Greek Root, Prefix or Suffix
diagonal
joining corners of two opposite angles as with a straight line
角线的, 斜的, 斜纹的; n. 对角线, 斜线, 斜列
Dissection of diagonal
diagonal = dia- (across, through) + gon (angle, extended further to mean corner) + -al (relating to, this is a Latin suffix)
diagonal = relating to two corners that are facing each other
diagonal = extended further to mean (of a line) joining two corners that are facing each other in a polygonal figure
Important roots for this word:
gon
dia-
Note: You may sometimes find that a vowel such as o is often inserted between two roots, as o inserted between phon and graph in phonograph = phon + o + graph, the reason is for easy pronounciation. Another example is archaeology = archae + o + logy