noun, masculine/paɾaleloˈɡɾamo/plural: paralelogramos
paralelogramo is masculine in Spanish.
parallelogram
Borrowed from Late Latin parallēlogrammum, from Ancient Greek παραλληλόγραμμον (parallēlógrammon, “bounded by parallel lines”), from παράλληλος (parállēlos, “parallel”) + γραμμή (grammḗ, “line”).