Wiktionary
incomplete sentence
n. (context grammar English) A group of words which appears to convey only part of a complete thought, lacking some component which is grammatically necessary to complete the thought.
Usage examples of "incomplete sentence".
Had that last, crucial, incomplete sentence gotten through, even a fragment of it?
The typing paper curled up in it stared back, the incomplete sentence describing Captain Sisko's fate taunting him.
Her incomplete sentence was evidently an ellipsis, and that meant that something significant had been omitted for his consideration.
Selena delivered the incomplete sentence with all possible aplomb.