sickle


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Related to sickle: sickle cell trait, sickle cell anemia

sickle

an implement for cutting grass, corn, etc., having a curved blade and a short handle

Sickle

 

a hand implement consisting of a long, curved, slightly serrated blade and used for cutting grain. Sickles first appeared in the Neolithic and were initially used to cut wild plants. They were made of wood, bone, or clay and had a cutting edge consisting of small chips of flint, called microliths, set in a groove in a mounting. Sickles made entirely of flint date from the Aeneolithic. The first metal sickles, made of bronze, appeared in the Bronze Age. Iron sickles, which appeared in the early Iron Age, were initially small and slightly curved. Later the shapes of sickles changed, becoming larger and more curved. In the USSR the sickle has survived only as a tool for small private farm plots.

sickle

[′sik·əl]
(agriculture)
The cutting mechanism of a binder, reaper, or combine.
(design engineering)
A hand tool consisting of a hooked metal blade with a short handle, used for cutting grain or other agricultural products.
(textiles)
A hooked arm for guiding the thread in a spinning mule.

Sickle

[′sik·əl]
(astronomy)
A group of six stars in the constellation Leo that outline the head of the lion.
References in periodicals archive ?
Over the years, the Blue Tag Gala has grown from a small, suburban brunch to a big-city, black-tie gala -- raising more than $1 million for sickle cell disease research in the process," said event co-chair Darlene Logan.
Meanwhile, there were 10 sickle cell deaths recorded in August 2012.
Society chairman Zakreya Ebrahim Al Kadhem announced the move yesterday after Bahraini Mohammed Kadhem Hassan became the 33rd sickle cell patient to die this year.
I didn't think these children [without sickle cell disease] would be having silent infarctions.
If one of the genes has the instruction for sickle cell haemoglobin (HbS) and the other the instruction for normal haemoglobin, the person will have sickle cell trait.
Sickle cell disease causes red blood cells, which are normally disc-shape, to become sickle-shape (crescent-shape).
The median level was significantly higher in sickle cell patients with pulmonary hypertension (206 pg/mL) than in sickle cell patients without pulmonary hypertension (47 pg/mL) or controls (29 pg/mL), Dr.
This approach can be applied to human ES cells to correct the sickle mutation," writes the medical team at the University of California at San Francisco, adding that further research is needed before the therapy can be applied on people.
The sickle cell carriers also gave birth three weeks earlier on average: at 33 weeks' gestation, compared with 36 weeks' gestation in the control group.
It is thought there are 6,000 adults and children with sickle cell disease in Britain.
To The Editor: Multi-organ failure is a rare and life-threatening complication of sickle cell anemia and sickle thalassemia.