The universal emergence of atomic hydrogen first occurred during the recombination epoch. At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H 2.
LINK / CITE ADD TO WORD LIST. verb. An eye with a dilated pupil. An eye with a dilated pupil. To dilate is defined as to expand and become wider. An example of dilate is when your eyes become wide with excitement.INK / CITE ADD TO WORD LIST. verb. An eye with a dilated pupil. An eye with a dilated pupil. To dilate is defined as to expand and become wider. An example of dilate is when your eyes become wide with excitement.
phthalate. n. 1. (Chemistry) a salt or ester of phthalic acid. Esters are commonly used as plasticizers in PVC; when ingested they can cause kidney and liver damage.1  Facebook.. A salt, ester, or anion of phthalic acid. 2. Any of a group of esters of phthalic acid that are widely used in the manufacture of plastics and as synthetic additives in perfumes and cosmetics.