Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Umami" Definition
noun
A taste that is characteristic of monosodium glutamate and is associated with meats and other high-protein foods. It is sometimes considered to be a fifth basic taste along with sweet, sour, salty, and bitter.
Source: American Heritage Dictionary
A taste sensation that is meaty or savory and is produced by several amino acids and nucleotides (as glutamate and aspartate).
Source: Merriam-Webster