reading / reeding are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
reading: (noun) the cognitive process of understanding a written linguistic message. (noun) a particular interpretation or performance. (noun) a datum about some physical state that is presented to a user by a meter or similar instrument. (noun) written material intended to be read. (noun) a city on the River Thames in Berkshire in southern England. (noun) the act of measuring with meters or similar instruments.
reeding: NA
reading: r·EH·d·ih·ng
reeding: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)