A small cylinder or something resembling a small cylinder in shape.
From 'cylindric' plus the diminutive suffix '-ule' (small). This term creates a noun meaning 'a tiny or miniature cylinder.'
Botanists use 'cylindricule' to describe the microscopic structures in plants—like the tiny cylindrical cells in pollen tubes—and it's amazing that plants use the same efficient cylinder design at scales from millimeters to meters!
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