noun
definition
An implement having a semicircular blade and short handle, used for cutting long grass and cereal crops.
definition
Any of the sickle-shaped middle feathers of the domestic cock.
verb
definition
To cut with a sickle.
definition
To deform (as with a red blood cell) into an abnormal crescent shape.
definition
Of red blood cells: to assume an abnormal crescent shape.
adjective
definition
Shaped like the blade of a sickle; crescent-shaped.
example
a sickle moon
Examples of sickle in a Sentence
A sickle, toothed like a saw, is used for reaping.
An old sickle mower and rake with their high metal seats were the only items she recognized.
Sickle cell anemia, also called sickle cell disease (SS disease), is an inherited condition caused by having abnormal hemoglobin, the protein that carries oxygen in the blood.
The increased risk among African Americans is not explained by the presence of sickle cell disease, nor is the excess risk among boys explained by trauma.
Sickle cell anemia-An inherited disorder in which red blood cells contain an abnormal form of hemoglobin, a protein that carries oxygen.
Sickle cell anemia does not predispose newborn infants to jaundice.
People with sickle cell anaemia have sickle hemoglobin (HbS) which is different from the normal hemoglobin (HbA).
Children with sickle cell anemia produce two abnormal hemoglobin proteins (inheriting one from each parent), which makes their red blood cells easily destructible while giving them a sickle-like shape.
By 1997, approximately 800 different diagnostic tests were available, most of them for hereditary genetic disorders such as Tay-Sachs disease, sickle cell anemia, hemophilia, muscular dystrophy, and cystic fibrosis.
Examples of genetic conditions include Down syndrome, Tay-Sach's disease, sickle cell disease, and hemophilia.
Severe diseases in the liver or kidneys, certain infections, sickle cell anemia, and some cancers also affect gonads.
Depending on your genetic background, you and your partner may also want to have a pregnancy blood test for genetic problems such as sickle cell disease or Tay-Sachs.
Blood donations benefit premature babies, cancer patients, individuals with sickle cell anemia and individuals undergoing surgery.
If you come from Russia the sickle and hammer paired with the bear could be your sign of patriotism.
The most common causes of stroke are congenital (present at birth) and acquired heart diseases, and sickle cell anemia.
About 10-15 percent of children with sickle cell disease suffer a stroke, usually ischemic stroke.
Sickle cell disease is a blood disorder in which the blood cells cannot carry oxygen to the brain because the blood vessels to the brain are either narrowed or closed.
Blood transfusions may be used to treat children with sickle cell disease.
Although there is a high risk of repeat strokes in patients with sickle cell anemia, the risk can be reduced with regular blood transfusions.
In addition, there is a blood test for fifth disease, but it is generally used only for pregnant women and for people who have weakened immune systems or who suffer from blood disorders, such as sickle cell anemia.
Sickle cell anemia is usually inherited from parents who are carriers, who have the sickle cell trait-a milder form of sickle cell anemia, or one abnormal hemoglobin.
Sickle cell anemia and sickle cell trait are found mainly in people whose families come from Africa, the Caribbean, the Eastern Mediterranean, Middle East, and Asia.
In the United States, sickle cell anemia affects some 72,000 people.
Some 2 million Americans carry the sickle cell trait and about one in 12 African Americans have the trait.
Sickle cell anemia is caused by an error in the gene that signals the body how to make hemoglobin.
Children suffering from sickle anemia have episodes during which they suddenly become unwell or complain of severe abdominal or chest pain, headache, stiffness of the neck or drowsiness.
Parents should know that a child having a sickle cell crisis requires urgent hospital treatment.
The diagnosis of sickle cell anemia is established during the newborn screen testing that is performed in the nursery at time of birth.
For children who are not tested, an electrophoresis test of the blood can detect the abnormal hemoglobin of sickle cell anemia.
Children with sickle cell disorders are at risk of developing severe infections, and penicillin is usually prescribed to prevent dangerous pneumococcal infections.
Bone marrow transplantation has been shown to provide a cure for severely affected children with sickle cell disease, but the procedure is not entirely without risk.
In addition, the marrow must come from a healthy matched sibling donor and only about 18 percent of children with sickle cell anemia are likely to have a matched sibling.
Research contributed a great deal about sickle cell anemia from 1970 to the early 2000s concerning what causes it, how it affects the patient, and how to treat it.
Scientists were as of 2004 starting to be successful at developing drugs that prevent the symptoms of sickle cell anemia and procedures that they hope should eventually provide a cure.
It has been observed that some children with sickle cell anemia continue to produce large amounts of fetal hemoglobin after birth, and studies have shown that these children have less severe cases of the disease.
Thirst and dehydration caused by not drinking enough, even if thirst is not felt, are known to trigger sickle pain.
Children with sickle cell anemia are anemic to various degrees.
Both sickle cell trait and sickle cell anemia are inherited.
If one partner has sickle cell trait and the other does not, their children each have a 50 percent chance of having the sickle cell trait, and a 50 percent chance of having normal hemoglobin.
If one parent has sickle cell trait it is extremely important that the other parent be tested.
If both parents have sickle cell trait and want to know whether the unborn child has sickle cell anemia, testing can be performed as early as the tenth week of pregnancy.
Parents should be aware that children with sickle cell anemia are also at increased risk of infection, especially from the Streptococcus pneumonia and H. influenzae bacteria.
Sickle cell anemia does not affect intelligence.
Children with sickle cell disorders can almost always attend school and participate fully in normal activities.
Sickle cell trait-Condition that occurs in people who have one of two possible genes responsible for the abnormal hemoglobin of sickle cell anemia.
People with this trait may suffer milder symptoms of sickle cell anemia or may have no symptoms.
J., et al. "Declining stroke rates in Californian children with sickle cell disease."
H. "Therapies to increase fetal hemoglobin in sickle cell disease."
A., et al. "Sustained long-term hematologic efficacy of hydroxyurea at maximum tolerated dose in children with sickle cell disease."
Children older than five years do not need vaccination, unless the child or adolescent has a serious health problem that lowers immunity, such as HIV infection, sickle cell disease, or is being treated for cancer.