Letters that make actinide series
s, a, d, e, n, c, r, t, i are letters that make 'actinide series'
Words within actinide series
ER, id, series, act, IE, ti, AC, SE, RI, ie, in, CT, tin, DE, ID, IN, Erie, actinide, Ac, Es, Er, In, Ni, Se, Ti, actin are words within 'actinide series'