flagellum
UK[fləˈdʒɛləm]US[fləˈdʒɛləm]
n
a long, slender, whip-like structure used by many microorganisms and cells for locomotion.
n
a slender shoot or runner in a plant, such as a creeping stem of a strawberry plant.
n
(historical) a whip, especially one used for inflicting punishment.
Morpheme Breakdown
flagell
um
flagell
whip
um
noun suffix
Etymology
the word flagellum is a direct borrowing from latin, where it was a diminutive of flagrum, meaning "whip." this root, flagrum, is thought to be of proto-indo-european origin, possibly related to roots meaning "to strike" or "to beat." the literal sense of a small whip evolved in biological contexts to describe whip-like appendages due to their similar shape and lashing motion. thus, the modern scientific term retains the core concept of a slender, striking instrument, now applied to microscopic structures and plant runners.
Analysis
Structure: flagell (whip) + um (noun suffix)
flagell is from latin flagellum, meaning a small whip or lash. the suffix -um is a latin neuter noun ending.
Examples
the bacterium propels itself through liquid by rotating its flagellum.
the flagellum of a sperm cell provides the motility necessary for fertilization.
botanists observed a new flagellum extending from the base of the plant.