# Translations:Dictionary:Delta/3/en

Another Thomsen anisotropic parameter is ${\displaystyle \varepsilon }$, and with weak anisotropy, ${\displaystyle \delta }$, which is independent of ${\displaystyle \varepsilon }$, is generally used instead of ${\displaystyle \delta ^{*}}$ it is the most critical factor for transverse isotropy[2]: