Synonyms for Deltoid (same or very similar meaning)
WordNet sense 1 (a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm):
deltoid muscle, musculus deltoideusWordNet sense 2 ((botany) of leaf shapes; of leaves having no divisions or subdivisions):
simple, unsubdividedFrom the ODE community, based on WordNetadd/edit