\flad͡ʒˈɛlə], \fladʒˈɛlə], \f_l_a_dʒ_ˈɛ_l_ə]\
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A whiplike motility appendage present on the surface cells. Prokaryote flagella are composed of a protein called FLAGELLIN. Bacteria can have a single flagellum, a tuft at one pole, or multiple flagella covering the entire surface. In eukaryotes, flagella are threadlike protoplasmic extensions used to propel flagellates and sperm. Flagella have the same basic structure as CILIA but are longer in proportion to the cell bearing them and present in much smaller numbers. (From King & Stansfield, A Dictionary of Genetics, 4th ed)
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- Belonging to, or characteristic of, a system of elementary education which combined manual training with other instruction, advocated and practiced by Jean Henri Pestalozzi (1746-1827), Swiss teacher. An advocate or follower the system of Pestalozzi. pes-ta-lot'si-an, adj. pertaining to graduated object-teaching as originated by Johann Heinrich Pestalozzi (1745-1827).