The optical thickness Ï of a medium is a dimensionless quantity that characterizes the attenuation of optical radiation in the medium. The attenuation results from the joint action of light absorption and light scattering.he optical thickness Ï of a medium is a dimensionless quantity that characterizes the attenuation of optical radiation in the medium. The attenuation results from the joint action of light absorption and light scattering.
As nouns the difference between automation and automatization is that automation is the act or process of converting the controlling of a machine or device to a more automatic system, such as computer or electronic controls while automatization is a process of making an action of a higher animal reflexive.
2. : the cellular process that results in the number of chromosomes in gamete-producing cells being reduced to one half and that involves a reduction division in which one of each pair of homologous chromosomes passes to each daughter cell and a mitotic division â compare mitosis.â meiÂ·otÂ·ic \mÄ«-Ëae-ËÃ¤\ tik. adjectiveefinition of MEIOSIS. 1. : the presentation of a thing with underemphasis especially in order to achieve a greater effect: understatement.