essential element


Also found in: Medical, Wikipedia.
Related to essential element: trace element

essential element

n
(Biochemistry) biochem any chemical element required by an organism for healthy growth. It may be required in large amounts (macronutrient) or in very small amounts (trace element). See also macronutrient, trace element
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in classic literature ?
"Danger in the races of officers, of cavalry men, is an essential element in the race.
Now we know only a few laws, and our result is vitiated, not, of course, by any confusion or irregularity in Nature, but by our ignorance of essential elements in the calculation.
People of the Philippines and the Sandiganbayan (First Division) instructed that the identification of a main plunderer in the Information is an essential element of the crime,' they added.
The second essential element in a culture of ownership is to be self-empowered.
There is one essential element missing in the life of most of us and that is sound sleep.
Police dogs have become an essential element in tracking down evidence.- Supplied photo
It is also an essential element for granting the certificate of practising the profession.
On appeal, she argued that her indictment wasnt facially valid because it did not contain an essential element of the alleged crime: that litter was placed where it ought not be.
K is the major essential element (488 [+ or -] 147 mg/L), followed by Na (330 [+ or -] 417 mg/L) > Ca (193 [+ or -] 53.2 mg/L) > P (156 [+ or -] 46.3 mg/L) > Mg (32.6 [+ or -] 15.5 mg/L) > Zn (2.89 [+ or -] 3.23 mg/L) > Fe (1.65 [+ or -] 1.43 mg/L) > Cu (0.54 [+ or -] 0.46 mg/L).
Iron is well established as an essential element and is a component of haemoglobin and is present in several human enzymes.
The results, yielded as part of a larger project to record changing childhoods in the digital world, underscore the need for establishing outdoor play as an essential element in early years education, from nursery on.

Full browser ?