conclūsĭuncŭla, ae, f. dim. [conclusio, II. D.],
a trifling or captious conclusion, a sophism : fallaces ( = σοφίσματα), Cic. Ac. 2 ( Luc. ), 24, 75: contortulae quaedam et minutulae conclusiunculae, id. Tusc. 2, 18, 42.
conclūsiuncula ae, f dim.conclusio, a captious conclusion, sophism : minutulae. ...
An Elementary Latin Dictionary