单词	perpendicular
释义	adjective | noun perpendicularperpendicular1 /ˌpɚpənˈdɪkyəlɚ/ adjective Etymology ETYMOLOGYperpendicular1 Origin: 1300-1400 Old French perpendiculer, from Latin, from perpendiculum plumb line, from pendere to hang 1 math, geometry if one line is perpendicular to another line, they form an angle of 90 degrees where they cross:  perpendicular linesperpendicular to First Street is perpendicular to Main Street.2not leaning to one side or the other but exactly upright SYN vertical:  a perpendicular pole3Perpendicular in the style of 14th- and 15th-century English churches which are decorated with straight upright lines—perpendicularly adverb adjective | noun perpendicularperpendicular2 noun math, geometry 1the perpendicular an exactly upright position or line:  at an angle to the perpendicular2[countable] a line that is perpendicular to another line
随便看	thereby therefore therein thereof thereon thereto theretofore thereunder thereupon therm therm- thermal thermal capacity thermal energy thermal pollution thermionics thermo- thermochemistry thermocline thermodynamic thermodynamics thermometer thermonuclear thermonuclear fusion thermoplastic

英语词典包含48224条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。