
Description of impotence (noun: no plural) inability to get and maintain erections
Samples of impotence While suffering from a temporary bout of impotence in my early twenties, I considered all the possible remedies (from exotic aphrodisiacs to penile splints) before paying a visit to my local GP, who consulted some weighty medical tome before advising me to avoid wearing excessively tight trousers.
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Description of yeast (noun: no plural) barm
Samples of yeast Yeast is reproduced by budding. Yeast is made up of millions of tiny fungus cells which literally go berserk when confronted by a liquid rich with sugars.
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Description of pulse (noun: plural: pulses) the expansion and contraction of the blood as it is pumped around the circulation
Samples of pulse You can feel the pulse at the wrist; neck; top of the thighs and scalp in babies.
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Description of chemical equation (noun: plural: chemical equations) any reaction occurring between atoms or compounds can be written with the reactants on the left and the products on the right separated by arrows showing the direction of the reaction
Samples of chemical equation A chemical equation showing the reaction of carbon and oxygen to form carbon monoxide looks like this: CO2(CO).
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Description of therm- (preffix) heat
Samples of therm- A thermometer measures temperature (the amount of 'heat').
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Description of TSH (abbreviation: thyroid stimulating hormone) hormone which is secreted by the anterior pituitary gland
Samples of TSH TSH is secreted by the anterior pituitary and stimulates the production of thyroid hormones from the thyroid.
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Description of law of thermodynamics (noun: no plural) principle explaining the relationship between different forms of energy
Samples of law of thermodynamics There are three laws of thermodynamics.
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Description of persist (verb: persisted; persisted; persisting) to continue
Samples 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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Description of miosis (noun: no plural) contraction of the pupil in the eye
Samples of miosis Light causes miosis of the pupil.
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Description of carcinogen (noun: plural: carcinogens) a substance that causes cancer
Samples of carcinogen Tobacco smoke is a known carcinogen.
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