Chambers 20th Century Dictionary(0.00 / 0 votes)Rate this definition: 1  Pawn. pawn, n. something given as security for the repayment of money or the performance of a promise: state of being pledged.âv.t. to give in pledge.âns. 2  Pawn. pawn, n. a common piece in chess. 3  Pawn. pawn, n. a gallery.
Monosodium glutamate is the sodium salt of glutamic acid. Glutamate is a naturally occurring amino acid that is found in nearly all foods, especially high protein foods such as dairy products, meat and fish and in many vegetables.Foods often used for their flavouring properties, such as mushrooms and tomatoes, have high levels of naturally occurring glutamate.lutamate is a naturally occurring amino acid that is found in nearly all foods, especially high protein foods such as dairy products, meat and fish and in many vegetables. Foods often used for their flavouring properties, such as mushrooms and tomatoes, have high levels of naturally occurring glutamate.
Excessive use of MSG has been suggested to be the cause, but this is controversial. The use of glutamate as a food additive, however, is not the reason for the enormous scientific interest in glutamate. Glutamate is the major excitatory transmitter in the brain The main motivation for the ongoing World Wide research on glutamate is due to the role of glutamate in the signal transduction in the nervous systems of apparently all complex living organisms, including man.