Definition of rectus in English:

rectus

Syllabification: rec·tus
Pronunciation: /ˈrektəs
 
/

noun (plural recti /-tī/)

Anatomy
1Any of several straight structures, in particular.
More example sentences
  • Leading from the seminiferous tubules are the tubuli recti or straight tubules lined only with columnar cells apparently derived from Sertoli cells.
  • The rectus femoris runs straight down the front of your thigh and, ideally, should protrude farther than any of your other quad muscles.
  • It may also be represented by a single muscle bundle between the lateral and superior recti.
1.1 (also rectus abdominis /abˈdämənis/) Each of a pair of long flat muscles at the front of the abdomen, joining the sternum to the pubis and acting to bend the whole body forward or sideways.
More example sentences
  • During expiration, contraction of the rectus abdominis and transversus abdominis muscles draw the pubic plates dorsally, decreasing abdominal volume.
  • The most superficial ab muscle, the rectus abdominis, runs from the top of your pubic bone to the sternum.
  • The abdominal muscle responsible for the ‘six-pack’ look is the rectus abdominis.
1.2Any of a number of muscles controlling the movement of the eyeball.
More example sentences
  • Geoff hooked a needle through the rectus, the gossamer-thin muscle that controls eye movement, then immobilized it with a suture.
  • Congenital orbital adherens syndrome was suspected, and MRI of orbits revealed retraction of the right eyeball with shortening of the right medial rectus and left deviation of the nasal septum.
  • Editor Ahmed and Ali wondered whether it is the oblique eye muscles or the superior or inferior recti that adduct the eye.

Origin

early 18th century: from Latin, literally 'straight'.

More definitions of rectus

Definition of rectus in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day middlescent
Pronunciation: ˌmɪdəˈlɛs(ə)nt
adjective
middle-aged, but still maintaining youthful interests and activities