One of the mysteries of the English language finally explained.
1Curved like the uncial sigma; crescent-shaped.
- ‘To isolate deviations from typical tree growth, we developed a model based on the amount of shoot elongation, which over equal time intervals approximates a sigmoid curve.’
- ‘The growth curve of the fruit of Marisol clementine fitted a single sigmoid curve well.’
- ‘The main body of the element comprises a longitudinal bony buttress that supports a very slight sigmoid row containing a minimum of five shallow tooth sockets.’
- ‘Usually, a time course of plant growth follows a sigmoid curve, which can be described by a logistic function.’
- ‘Fruit development was described by an approximately sigmoid growth pattern based on fresh weight, irrespective of cultivar.’
- ‘A series of unsuccessful attempts at scheduling surgery for her sigmoid colectomy followed because of complications with her neutrophil count and hospitalization for new onset atrial fibrillation.’
- ‘First, the cumulative adoption of an innovation over time follows an S-shaped or sigmoid curve.’
- ‘‘The river flows in long sigmoid Curves,’ he wrote, ‘through an alluvial valley of no great width.’’
- short for sigmoid colon
- ‘The most frequently involved site is the sigmoid.’
- ‘An enema shows a normal sized rectum and small caliber sigmoid and descending colon with a transition zone in colonic caliber occurring at the level of the splenic flexure.’
- ‘The sigmoid may lie in the abdomen just inferior to the splenic flexure of the transverse colon, or in the right iliac fossa.’
- ‘Although sigmoid volvulus can resolve spontaneously, nonoperative management begins with fluid resuscitation and antibiotics, followed by barium enema detorsion of the sigmoid.’
Late 17th century: from Greek sigmoeidēs, from sigma (see sigma).
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