deltoideus

== English == === Etymology === From deltoid +‎ -eus. From Ancient Greek adjective δελτοειδής (deltoeidḗs). See also: δέλτα (délta), the fourth letter of the Greek alphabet. === Pronunciation === Rhymes: -ɔɪdiəs === Adjective === deltoideus (not comparable) Like a triangle, triangular. === Noun === deltoideus (plural deltoidei) The deltoideus muscle. ==== Derived terms ==== deltoid, deltoids delt, delts === References === Encyclopedia Britannica == Latin == === Alternative forms === deltoīdēs === Adjective === deltoīdeus (feminine deltoīdea, neuter deltoīdeum); first/second-declension adjective (New Latin) deltoid; triangular ==== Declension ==== First/second-declension adjective.