a combining form meaning “right,” “straight,” used in the formation of compound words: rectilinear.
Also especially before a vowel, rect-.

Origin of recti-

< Latin rēcti-, combining form of rēctus right Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for recti-


before a vowel rect-

combining form

straight or rightrectilinear; rectangle

Word Origin for recti-

from Latin rectus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012