
Description of barium (noun: no plural) metallic element found only as compounds
Samples of barium Barium is soft, white and is used to view the alimentary system in X-rays.
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Description of first aid (noun: no plural) the initial care used in emergencies to help a wounded or ill person
Samples of first aid First aid can save lives.
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Description of itch (noun: plural: itches) Local irritation of the skin that makes you want to scratch
Samples of itch Scratching an itch makes it itchier!
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Description of dinucleotide (noun: plural: dinucleotides) two nucleotide chains coiled together to form an double helix
Samples of dinucleotide Dinucleotides; such as nicotinamide adenine dinucleotide (NAD) are important in metabolic processes.
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Description of nervous system (noun: no plural) the organ system that coordinates the activities of the body
Samples of nervous system Muscular Sclerosis is a disease of the nervous system.
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Description of spindle fibers (noun: only plural) achromatic filaments forming a spindle during cell division
Samples of spindle fibers During the first stage of mitosis, spindle fibers consisting of microtubules and proteins occur near the centrioles.
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Description of thoracic cavity (noun: no plural) the chest cavity
Samples of thoracic cavity The thoracic cavity contains the heart and lungs.
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Description of conserve (verb: conserved; conserved; conserving) to protect; maintain; hold
Samples of conserve Plants conserve water in times of drought.
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Description of regenerate (verb: regenerated; regenerated; regenerating) to grow again; to reform after injury
Samples of regenerate The epidermis can regenerate after injury.
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Description of ecology (noun: no plural) the relationships between all communities of living organisms and their environment
Samples of ecology An ecologist knows all about ecology.
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