morphine

n. the primary active ingredient in opium, first synthesized in 1806 and widely used as an analgesic and sedative. It interacts predominantly with the mu opioid receptor. Prolonged administration or abuse can lead to dependence and to withdrawal symptoms on cessation. The substance is 10 times as potent as opium for pain relief. See opioid intoxication; opioid use disorder.

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Psychology term of the day

January 19th 2025

developmental milestone

any aspect of physical, cognitive, social, or emotional development that is significant and predictable, such that children throughout the world develop this ability, characteristic, or behavior at about the same time. Developmental milestones include presence of first teeth and language acquisition.