
Explanation of sinus (noun) form plural: sinuses air spaces in the skull; pathological cavity containing pus
Sample of sinus Whenever I catch a cold my sinuses hurt.
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Explanation of underweight (adjective) forms: more underweight; most underweight; the most underweight scraggy; scrawny; skinny
Sample of underweight An underweight person has a low body mass index.
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Explanation of myelin sheath (noun) form: no plural this is a layer of Schwann cells which covers the nerve axon
Sample of myelin sheath The myelin sheath is an electrical insulator.
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Explanation of acid rain (noun) form: no plural low pH precipitation due to dissolved sulphur dioxide and nitrogen oxides
Sample of acid rain Acid rain is a type of pollution which has increased because of industrial processes.
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Explanation of molecular (adjective) forms: more molecular; most molecular; the most molecular composed of tiny particles
Sample of molecular The molecular formula of salt is NaCl.
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Explanation of tricuspid (adjective) having three parts
Sample of tricuspid The tricuspid valve lies between the right atrium and the right ventricle.
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Explanation of microbody (noun) form plural: microbodies membranous vesicle that contains enzymes
Sample of microbody A peroxisome is an example of a microbody.
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Explanation of persist (verb) forms: persisted; persisted; persisting to continue
Sample of persist In spite of various difficulties over these early broadcasts and the general absence of supplementary printed material for class use, together with some antipathy towards this innovatory form of teaching, the Cambridge branch persisted with radio programmes into 1929.
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Explanation of delay (noun) form plural: delays a hold-up; a postponement
Sample of delay There's been an accident on the freeway; so there may be a long delay unless we change our route.
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Explanation of anterior (noun) form plural: anteriors front tooth
Sample of anterior At the anterior end of the embryo where the brain will form the folds are well separated with a broad area between them, but the folds run close together towards the rear end.
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