Skip to main content
sigmoid

sigmoid

9.9
Relating to the S-shaped part of the large intestine
  • adjective
  • /ˈsɪɡmɔɪd/
  • Specialized
translation icon : sigmoide
  • Residual cholesteatoma was found in the mastoid cavity over the sigmoid sinus.
  • sigmoid sinus

Examples

  • The postmortem diagnosis was a perforated tumor of the sigmoid colon consistent with lymphoma and associated diffuse peritonitis.

    Academic text (2006)
  • In our patient, the broad-based osteoma was adherent to the sigmoid sinus, fallopian canal, and stylomastoid foramen.

    Academic text (2008)
  • It has a modest sigmoid hill coefficient of three, just like hemoglobin.

  • Leakage occurred in six patients with low anterior rectum resection, four with sigmoid resections, two with colorectostomies, and two with hemicolectomies.

    Academic text (1999)
  • The upshot: when I have my tumor surgery in July, Dr. Brown recommends removing everything in my bowel from the bottom of my sigmoid colon down, leaving me with no functioning rectum, and meaning that I will need a colostomy bag for the rest of my life.

    Blog text (16)
  • Such sigmoid allometries between horn length and body size turn out to be very common among horned beetle species and are particularly widespread in the genus Onthophagus (figure 4).

    Academic text (2005)
  • Magnetic resonance venography showed the absence of flow in the right lateral sinus, sigmoid sinus, and internal jugular vein (Figure 3).

    Academic text (2009)
  • In lateral sinus thrombophlebitis, the sigmoid and transverse sinuses must be unroofed widely, the sinus opened, and the clot evacuated.

    Academic text (2008)
  • The doctor explained how the sigmoid section of the colon can be affected by certain diseases.

  • During the procedure, the surgeon carefully removed a polyp from the sigmoid part of the large intestine.

Synonyms

sigmoidal
vssigmoid
  • Specialized
9.9

Shaped like the letter S in the lower part of the large intestine

adds that it has the form of the letter S

Compounds

sigmoid colon
  • Specialized
1 6.1

An S-shaped part of the large intestine before the rectum

sigmoid sinus
  • Specialized
9.1

A large S-shaped vein in the covering of the brain that takes blood to a vein in the neck

sigmoid vein
  • Specialized
6.7

A tube that carries blood away from the sigmoid colon

sigmoid flexure
  • Specialized
9.9

An S-shaped bend near the end of the large intestine that leads to the rectum

How Curved

sigmoid
  • Specialized
9.9
s-shaped
3.9
curved
6 1.0
straight
442 1.0

Surface Forms

sigmoid positive

Morphology

sigmoid = sigma (transparent) = sigmo + oid

Derived from 'sigma' + '-oid' to mean 'S-shaped'; in anatomy it names the S-shaped bend, so the morphological relation is direct.

Etymology

Sigmoid comes from the Greek letter sigma and the ending -oid meaning 'like' or 'shape', so it literally means 'S-shaped'. That is why the sigmoid colon is the S-shaped part of the large intestine.