cuprammonium cellulose complex

cupr- cupra silk cupral cupralith cupralium cupraloy cupramate cuprammonia cuprammonium cuprammonium fibre cuprammonium rayon cuprammonium silk

at the time of at the top of at the top of the tree at the touch of at the turn of the century at the turn of the year at the utmost at the velocity of at the very least at the very moment