IELTS Vocabulary ebook

Definition: An infectious disease causing a mild fever and a rash of itchy inflamed pimples which turn to blisters and then loose scabs. It is caused by the herpes zoster virus and mainly affects children.

Example sentences:

• Generally, chickenpox is a milder illness for children than it is for adults.

Definition: (Of an illness) persisting for a long time or constantly recurring

Example sentences:

• People with chronic respiratory or cardiovascular illness or immune system diseases are also more susceptible than others to pollutants.

Definition: (Of a disease) characterized by progressive deterioration and loss of function in the organs or tissues.

Example sentences:

• This damage impairs the immune system, leading to infections, cancer, or degenerative diseases such as heart disease.

Definition: Relating to the process of digesting food:

Example sentences:

• Symptoms include increased blood pressure, cancers of the mouth and upper digestive system.

Definition: Resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells

Example sentences:

• Vaccinations allow you to become immune to an infection without having the illness first.

Definition: Make (a person or animal) immune to infection, typically by inoculation

Example sentences:

• Stray dogs are carefully controlled, household dogs are immunized, and rabies vaccination is widely available.

Definition: An intermittent and remittent fever caused by a protozoan parasite which invades the red blood cells and is transmitted by mosquitoes in many tropical and subtropical regions

Example sentences:

• Preventable diseases such as malaria and diarrhea and cholera are a major killer.

Definition: A bacterium, virus, or other microorganism that can cause disease

Example sentences:

• Symptoms and signs of influenza in children are not specific and can mimic a range of other common respiratory viral pathogens.

Definition: An infectious viral disease that affects the central nervous system and can cause temporary or permanent paralysis.

Example sentences:

• Unless polio is eliminated in India and Nigeria, global eradication cannot be achieved

Definition: A tooth situated between the canine and the molar teeth. An adult human normally has eight, two in each jaw on each side.

Example sentences:

• The normal permanent dentition comprises four incisors, two canines, four premolars, and six molars in each jaw.

Definition: A layer at the back of the eyeball that contains cells sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.

Example sentences:

• The chip captures light that enters the eye, and generates an electrical signal that is transmitted to the overlaying neural cells of the retina.

Definition: (ADJECTIVE) Related to saliva

Example sentences:

• Reflex secretion of saliva from the salivary glands under the tongue and in the cheeks is stimulated by chewing, taste and smell, to varying degrees.

Definition: enduring strength and energy

Example sentences:

• One of the great battles for a young dancer is finding the stamina to survive a solo without falling to pieces by the end.
• Is it possible for one to have the mental, emotional and even physical stamina at the same time?

Definition: (NOUN) vaccinate

Example sentences:

• There are also some major infectious diseases for which vaccinations have not been developed. Without vaccination, it can take days or weeks to acquire immunity to a particular disease.

Definition: Each of the four connected fluid-filled cavities in the centre of the brain.

Example sentences:

• There was no definite plane between the tumor and the floor of the fourth ventricle.