Merriam-Webster Collegiate Dictionary - fixed

 adjective  Date: 14th century  1.  a. securely placed or fastened ; stationary  b.  (1) nonvolatile  (2) formed into a chemical compound  c.  (1) not subject to change or fluctuation a ~ income  (2) firmly set in the mind a ~ idea  (3) having a final or crystallized form or character  (4) recurring on the same date from year to year ~ holidays  d. immobile, concentrated a ~ stare  2. supplied with something (as money) needed comfortably ~  • ~ly adverb  • ~ness noun