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{%type%} Definitions

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Short "hint"

n. - An amoeba-like protozoan with a chitinous shell resembling an umbrella.

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Usage examples (2)
  • If we bear these circumstances in mind, we can almost always tell whether an arcella will develop air-vesicles or no; and if it has already developed them, we can tell...
  • After from five to twenty minutes, the specific gravity of the arcella is so much lessened that it is lifted by the water with its pseudopodia, and brought up against...
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