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flagellum Definition

fla·gel·lum (flə jeləm)

noun pl. -·la or -·lums

  1. a whip
  2. Biol. a whiplike part or process of some cells, esp. of certain bacteria, protozoans, etc., that is an organ of locomotion or produces a current in the surrounding fluid
  3. Bot. a threadlike shoot or runner
  4. Zool. the terminal, lashlike portion of the antenna in many insects

Etymology: L, a whip: see flagellate

flagellum Usage Examples

Converse of object

  • have: Only Bacteria have flagella of a totally different type.
  • possess: All the small cells of the colony possess two flagella and a small eyespot.
  • use: It is not just protists that use flagella for locomotion.
  • encode: This indicates a common ancestry, although no TTSS sequence homologues for the genes encoding the flagellum are found.
  • build: Research Title: How does Vibrio cholerae build a flagellum at its old cell pole?
  • develop: Sometimes, however, an ameba will issue from the spore, remain quiescent for a few minutes, and then develop flagella.

Adjective modifier

  • bacterial: The bacterial flagellum is driven by a proton motive force resulting from a gradient of protons.
  • single: Polarity is clearly seen in Vibrio cholerae, a highly motile pathogen that swims by rapidly rotating a single polar flagellum.
  • eukaryotic: The organization of these structures is quite different from that of eukaryotic flagella.
  • posterior: The phylum Chytridiomycota has traditionally been characterized on the basis of motile cells with a single posterior flagellum.
  • long: Haematococcus swims with the aid of two long flagella.
  • polar: Polarity is clearly seen in Vibrio cholerae, a highly motile pathogen that swims by rapidly rotating a single polar flagellum.

Modifies a noun

  • biogenesis: V. cholerae builds only one flagellum per cell, suggesting that there must be a close coupling between flagellum biogenesis and cell division.
  • function: This latter finding is of critical importance since we also show that flagellum function is essential to the survival of bloodstream trypanosomes.

Noun used with modifier

  • coli: The E coli flagellum has about 40 different kinds of proteins to make it work.