[rek-tuh s]
noun, plural rec·ti [rek-tahy] /ˈrɛk taɪ/. Anatomy.
  1. any of several straight muscles, as of the abdomen, thigh, eye, etc.

Origin of rectus

1695–1705; < New Latin rēctus (musculus) straight (muscle)


  1. 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. 2018

Examples from the Web for recti

Historical Examples of recti

  • Four of these muscles run a straight course and are called the recti.

    A Practical Physiology

    Albert F. Blaisdell

British Dictionary definitions for recti


  1. the plural of rectus


before a vowel rect-

combining form
  1. straight or rightrectilinear; rectangle

Word Origin for recti-

from Latin rectus


noun plural -ti (-taɪ)
  1. anatomy a straight muscle, esp either of two muscles of the anterior abdominal wall (rectus abdominis)

Word Origin for rectus

C18: from New Latin rectus musculus
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