Sentence:  Mike stopped to cherish all his brother selves , the many threes-fulfilled on Mars , corporate and discorporate , the precious few on Earth - the unknown <WSD>powers</WSD> of three on Earth that would be his to merge with and cherish now that at last long waiting he grokked and cherished himself . 
Meaning of the word marked with <WSD> tags:  a mathematical notation indicating the number of times a quantity is multiplied by itself