The Word of the Day for August 28 is: 

morpheme   \MOR-feem\   noun
     : a word or part of a word that contains no smaller unit of meaning

Example sentence:
     The word "unloader" includes the morphemes "un-," "load," and "-er."

Did you know?
     Morphemes are the indivisible basic units of language, much like 
     the atoms which physicists once assumed were the indivisible units 
     of matter. 
     
     English speakers borrowed "morpheme" from French "morpheme," 
     which was itself created from the Greek root "morphe," meaning "form." 
     The French borrowed "-eme" from their word "phoneme," which, like English 
     "phoneme," means "a basic unit of speech that distinguishes one utterance 
     from another." 
     
     The French suffix and its English equivalent "-eme" are used to 
     create words that refer to distinctive units of language structure. 
     Words formed from "-eme" include "lexeme" ("a meaningful linguistic unit in 
     the vocabulary of a language"), "grapheme" ("a unit of a writing system"), 
     and "toneme" ("a unit of intonation in a language in which variations i
     n tone distinguish meaning").