isonicotinic acid hydrazide

i·so·nic·o·tin·ic ac·id hy·dra·zide

[ahy-suh-nik-uh-tin-ik; hahy-druh-zahyd, -zid]
noun Pharmacology.

Origin:
1950–55; iso- + nicotinic acid; hydraz(ine) + -ide

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Encyclopedia Britannica
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isonicotinic acid hydrazide

drug used in the treatment and prevention of tuberculosis. Isoniazid commonly is used in combination with other drugs, such as rifampin, ethambutol, pyrazinamide, or streptomycin; these drugs are used with isoniazid in order to prevent, or at least delay, the development of isoniazid-resistant strains of tuberculin bacilli. Treatment usually is continued for many months. The most important drug in the therapy of tuberculosis, isoniazid was introduced into medicine in 1952; it usually is administered orally, but it can be given by injection. Side effects may include hepatitis (especially in older patients), peripheral neuropathy, dizziness, and headache.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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00:10
Isonicotinic acid hydrazide has a plethora of syllables.
So is floccinaucinihilipilification. Does it mean:
the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
(used as a nonsense word by children to express approval or to represent the longest word in English.)
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