contractibility

noun

1. an agreement between two or more people to do something, esp. one formally set forth in writing and enforceable by law; compact; covenant
2. a formal agreement of marriage or betrothal
3. a document containing the terms of a contract
4. the branch of law having to do with contracts
5. ☆ Informal an assignment to murder someone for pay
6. Bridge
   1. the highest bid in an auction
   2. the number of tricks, and the suit or no-trump preference, stated in such a bid
   3. contract bridge

transitive verb

1. 1. to enter upon, or undertake, by contract
   2. to hire (a person, business, etc.) to perform under contract: we contracted him to fix the roof
2. to get, acquire, or incur: to contract a disease, a debt, etc.
3. 1. to reduce in size; draw together; narrow; shrink; shorten: cold contracts metals
   2. to draw (the brow or brows) together; knit
4. to narrow in scope; restrict
5. Rare to betroth
6. Gram. to shorten (a word or phrase) by the omission of a letter or sound, as in I'm, e'er, can't

intransitive verb

1. to make a contract; agree formally: to contract for a new car
2. to become reduced in size or bulk; draw together; shrink; narrow; shorten