say it: MEE-dee-uhn
median is an adjective and noun meaning "relating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values)". It carries 4 recorded senses.
the number midway between the two middle numbers in a series containing an even or odd number of items
statistics
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for median come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.