index - definition and synonyms

verb [transitive] 

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/ˈɪndeks/
present tense
I/you/we/theyindex
he/she/itindexes
present participleindexing
past tenseindexed
past participleindexed
  1. 2
    economics to make the value of something such as salaries or pensions rise or fall according to the general level of prices