Containing a specific form or number of cells.(adjective)
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Use "celled" in a sentence
"If single celled organisms could have feelings, the mutant would have been depressed."
"It is perhaps fortunate, then, that single celled organisms do not have consciousness or feelings, because if they did the mutant might never have been alive when its sisters all spontaneously lost cohesion of their cell membranes and spilled their plasm all over the primordial ocean."
"Most of the earth's oxygen is produced in the sea by single-celled organisms."