Definition of aminopterin

nocturnal Definition: (adjective) of the night; active at night. Petersons.com

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< aminophylline

aminopyrine >

am·i·nop·ter·in    (m-nptr-n) KEY  

NOUN:

A folic acid antagonist, C₁₉H₂₀N₈O₅, used as an antineoplastic agent. It has been mainly replaced by methotrexate.

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ETYMOLOGY:
amino- + pterin, a chemical compound derived from pteridine, a compound first identified in butterflies' wings (from Greek pteron, wing; see pet- in Indo-European roots)

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