central limit theorem

Short definition from Wiktionary

Noun

1. 1
   The theorem that states that if the sum of independent identically distributed random variables has a finite variance, then it will be approximately normally distributed.
2. 2
   Any of various similar theorems.
3. 3
   Alternative letter-case form of central limit theorem (“the theorem that states that if the sum of independent identically distributed random variables has a finite variance, then it will be approximately normally distributed”)