Sentence:  Felix Kopstein states that `` when the snake reaches its maturity it has already reached about its maximal <WSD>length</WSD> '' , but goes on to cite the reticulate python as an exception , with maximum length approximately three times that at maturity . 
Meaning of the word marked with <WSD> tags:  the linear extent in space from one end to the other; the longest dimension of something that is fixed in place