| amino acid transmitter | <biochemistry> Amino acids released as neurotransmitter substances from nerve terminals and acting on postsynaptic receptors for example _ aminobutyric acid (GABA) and glycine that are fast inhibitory transmitters in the mammalian central nervous system. Glutamate and aspartate mediate fast excitatory transmission. Strychnine (for glycine) and bicuculline for GABA) are blocking agents for amino acid action. (18 Nov 1997) |
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| transmitter | One who, or that which, transmits; specifically, that portion of a telegraphic or telephonic instrument by means of which a message is sent; opposed to receiver. Source: Websters Dictionary (01 Mar 1998) |