Home › Words › G › gabapentinoidgabapentinoidgabapentinoid · noun — any of a class of drugs that are derivatives of the inhibitory neurotransmitter γ-aminobutyric acid (GABA), acting to block the α₂δ subunit (gabapentin receptor) of the voltage-dependent calcium channel.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom gabapentin + -oid.nounAny of a class of drugs that are derivatives of the inhibitory neurotransmitter γ-aminobutyric acid (GABA), acting to block the α₂δ subunit (gabapentin receptor) of the voltage-dependent calcium channel.Definitions & examples from Wiktionary (CC BY-SA 3.0).