noun
a specialized structure found in certain ciliated protozoans, used for feeding and capturing prey
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The actinostome is a specialized mouth structure found in certain species of marine invertebrates.
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Did you know that the actinostome is like a unique mouthpart in some sea creatures?
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That sea critter has a cool actinostome thingy going on in its mouth.
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Her words were like the actinostome of the situation, drawing in all the attention and focus.