A precise scientific instrument that measures the rate of growth in organisms, particularly plants, by tracking changes in size or height over time.
From 'auxo-' (growth) and '-meter' (measure), combining Greek roots for growth and measurement. The term developed in 19th-century botany as scientists needed precise growth-measurement tools.
An auxometer is essentially a super-sensitive growth detector—it can measure tiny changes in a plant's growth that human eyes couldn't possibly see. Early scientists used auxometers to discover that plant stems grow faster at night!
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