catalectic adjective 2noun 1forms 1 adjective2 •(said of a line with incomplete meter) lacking a syllable at the end or ending with an incomplete foot. •incomplete; partial; not affecting the whole of a substanceThe process is not practised to any extent , but is a curious example of a catalectic action started by the impact of light — 1878 noun1 •A line with incomplete meter, lacking a syllable at the end or ending with an incomplete foot. formscatalectics