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pyrethrin
pyrethrum
pyretic
Pyrex
pyrexia
pyrheliometer
pyric
pyridine
pyridoxal
pyridoxamine
pyridoxine
pyriform
pyrimethamine
pyrimidine
pyrite
pyro-
pyrocatechol
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pyridoxal
pyr·i·dox·al [ pìrri dóksəl ]


noun 
Definition:
 
compound of vitamin B6 group: a coenzyme derived from vitamin B6 that is involved in the synthesis of amino acids
[Mid-20th century. <pyridoxine]
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