La Condamine, Charles Marie de (shärl märēˈ də lä kôNdämēnˈ) [key], 1701–74, French traveler and mathematical geographer. He was one of a group sent to Peru in 1735 to measure the length of an arc of one degree of the meridian at the equator. While in South America he made the first scientific exploration of the Amazon region. His journal was published in 1751.
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