from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Having valence 3.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having a valence of 3
- n. Any trivalent chromosome.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having a valence of three; capable of being combined with, substituted for, or compared with, three atoms of hydrogen; -- said of triad atoms or radicals; thus, nitrogen is trivalent in ammonia.
from The Century Dictionary and Cyclopedia
- In chem., equivalent in combining or displacing power to three monad atoms; triadic: applied to an element or a radical. Also triatomic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. having a valence of three
Sorry, no etymologies found.
A review of 31 studies published over four decades found that the most widely used seasonal flu vaccine, known as trivalent inactivated vaccine, was only 59 per cent effective in healthy adults.
It will be decided later whether vaccine-makers put them all in one shot, a so-called trivalent dose, or split them up.
According to the Health Protection Agency, the vast majority of those who died had not had this season's "trivalent" vaccine, which protects against three strains of flu.
Influenza vaccines are trivalent, meaning they contain three different strains.
The other strains are H3N2 - which like H1N1 is a type of influenza A - and influenza B. Fukuda said national health regulatory authorities would have to decide whether to combine the three strains into a single "trivalent" shot, administer three separate vaccines, or use a separate H1N1 shot and combine the other two in one shot.
The federal government restricts the amount of "total chromium" in drinking water and requires water utilities to test for it, but that includes both trivalent chromium, a mineral that humans need to metabolize glucose, and hexavalent chromium, the metal that has caused cancer in laboratory animals.
I performed a study with Dr. Harry Preuss and colleagues using trivalent chromium in the form of niacin-bound chromium NBC.
She explains, The problem is that trivalent chromium is actually good for you--in fact, it's necessary for metabolism.
What the EPA does do, Parsons reports, is limit the total chromium in drinking water, "the combined amount of hexavalent chromium and trivalent chromium."
Bi is a heavy brittle diamagnetic trivalent metallic element usually recovered as a by-product from ores of other metals.