Entry 1 sense Webster, 1913 Seraphim /sĕrˈ-ə-fĭmˌ/ · Ser·a·phim · IPA /ˈsɛɹ.əˌfɪm/ 01 n. The Hebrew plural of Seraph. Cf. Cherubim. 1. The Hebrew plural of Seraph. Cf. Cherubim. See: Seraph, Cherubim