electricity usage and so on we monitor our health through a variety of measures of how well our body is performing weight blood pressure cholesterol levels work performance is another aspect of our lives and measuring it should be what we do
eth- (organic chemistry) Used as a combining form to denote the presence of 2 carbon atoms in the parent chain when forming names of organic compounds. Derived terms
etch. 1. to engrave with an acid or the like, as to form a design in furrows that when charged with ink will give an impression on paper. 2. to produce (a design, image, etc.) by this method, as on copper or glass. 3. to outline clearly or sharply; delineate. 4. to fix or imprint firmly: His face is etched in my memory.o cut into the surface of (glass, for example) by the action of acid, especially by coating the surface with wax or another protective layer and drawing lines with a needle and then using the acid to form the lines on the unprotected parts of the surface. b. To make or create by this method: etch a design on glass. 2.