Merriam-Webster Collegiate Dictionary - change

 I. verb  (~d; changing)  Etymology: Middle English, from Anglo-French ~r, from Latin cambiare to ex~, probably of Celtic origin; akin to Old Irish camm crooked  Date: 13th century  transitive verb  1.  a. to make different in some particular ; alter never bothered to ~ the will  b. to make radically different ; transform can't ~ human nature  c. to give a different position, course, or direction to  2.  a. to replace with another let's ~ the subject  b. to make a shift from one to another ; switch always ~s sides in an argument  c. to ex~ for an equivalent sum of money (as in smaller denominations or in a foreign currency) ~ a 20-dollar bill  d. to undergo a modification of foliage changing color  e. to put fresh clothes or covering on ~ a bed  intransitive verb  1. to become different her mood ~s every hour  2. of the moon to pass from one phase to another  3. to shift one's means of conveyance ; transfer on the bus trip he had to ~ twice  4. of the voice to shift to lower register ; break  5. to undergo transformation, transition, or substitution winter ~d to spring  6. to put on different clothes need a few minutes to ~ for dinner  7. ex~, switch neither liked his seat so they ~d with each other  • ~r noun Synonyms:  ~, alter, vary, modify mean to make or become different. ~ implies making either an essential difference often amounting to a loss of original identity or a substitution of one thing for another ~d the shirt for a larger size. alter implies a difference in some particular respect without suggesting loss of identity slightly altered the original design. vary stresses a breaking away from sameness, duplication, or exact repetition vary your daily routine. modify suggests a difference that limits, restricts, or adapts to a new purpose modified the building for use by the disabled.  II. noun  Date: 13th century  1. the act, process, or result of changing: as  a. alteration a ~ in the weather  b. transformation a time of vast social ~ going through ~s  c. substitution a ~ of scenery  d. the passage of the moon from one monthly revolution to another; also the passage of the moon from one phase to another  e. menopause  2. a fresh set of clothes  3. British ex~ 5a  4.  a. money in small denominations received in ex~ for an equivalent sum in larger denominations  b. money returned when a payment exceeds the amount due  c. coins especially of low denominations a pocketful of ~  d. a negligible additional amount only six minutes and ~ left in the game  e. money 1 cost a large chunk of ~  5. an order in which a set of bells is struck in ~ ringing  6. ~up