from the GNU version of the Collaborative International Dictionary of English
- n.pl. Same as suctoria, 1.
from The Century Dictionary and Cyclopedia
- One of three divisions of infusorians, containing the acinetiform animalcules, as distinguished from the flagellate and the ciliate; a class or order of Infusoria, characterized by the tentaculiform and usually suctorial nature of their processes, and divided into Suctoria and Actinaria.
- An order of cephalopods, also called Tetrabranchiata: opposed to Acetabulifera. See cut under Tetrabranchiata.
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