The term 'capable of being viewed' can be broken down into four crossword solutions: Tensile (7 letters), VINCIBLE (8 letters), Viewable (8 letters), and SOLUBLE (7 letters). Tensile refers to the ability of a material to withstand tension, or stretching. VINCIBLE is an adjective meaning capable of being overcome or defeated. Viewable is an adjective meaning able to be seen or observed. Finally, SOLUBLE is an adjective meaning able to be dissolved in a liquid. Together, these four words describe something that can be seen, stretched, defeated, and dissolved.