1886, from tri- + axial.
word-forming element meaning "three, having three, once every three," from Latin tres (neuter tria) or Greek treis, trias "three" (see three).
"pertaining to or of the nature of an axis; situated in an axis" 1830, from axis + -al (1). Related: Axially.
updated on February 16, 2014
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。