from The American Heritage® Dictionary of the English Language, 4th Edition
- n. 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One of the five basic tastes, the savory taste of foods such as seaweed, cured fish, aged cheeses and meats
- n. The taste of flavor enhancers added to food to accentuate savoriness, notably monosodium glutamate
Japanese.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Japanese 旨味, うまみ (umami), which describes the flavour. (Wiktionary)