Increase in size (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">increase in size</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for grow that I've seen before include "Gain in size" , "Become bigger" , "Mature" , "Get bigger" , "Multiply" .)
(Other definitions for growth that I've seen before include "Process of enlargement" , "Gradual increase" , "Process of development" , "Increase - development - tumour" , "Development. maturation" .)