A small horn-like projection or point, especially in botany or zoology.
From Latin cornu (horn) plus the diminutive suffix -ule, meaning 'small.' This technical term developed in natural history to describe tiny horn-like features of organisms.
Many insects have cornules—tiny horn-like sensory projections called cerci that help them detect vibrations and air movements, making them living motion detectors despite their miniature size.
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