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.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  parallel, collimate(verb) make or place parallel to something. They paralleled the ditch to the highway. 2  collimate(verb) adjust the line of sight of (an optical instrument) collimate(Verb) To focus into a narrow beam or column. Collimate(verb) to render parallel to a certain line or direction; to bring into the same line, as the axes of telescopes, etc.; to render parallel, as rays of light.