外博词典,懂英语单词快速记忆法的在线英语词典

quadratic (adj.)

1650s, "square," with -ic + obsolete quadrate "a square; a group of four things" (late 14c.), from Latin quadratum, noun use of neuter adjective quadratus "square, squared," past participle of quadrare "to square, make square; put in order," related to quadrus "a square," quattuor "four" (from PIE root *kwetwer- "four"). In mathematics by 1660s; the algebraic quadratic equations (1680s) are so called because they involve the square and no higher power of x.

小程序码 手机访问 联系客服 返回顶部

扫码访问小程序

随时随地,掌上学习

扫码访问外博网

随时随地,掌上学习

客服微信