Entry 1 sense Webster, 1913 Agraphia /ā′-gră′-fē-ə/ · A·graph·i·a · IPA /ˌeɪˈɡɹæ.fi.ə/ 01 n. The absence or loss of the power of expressing ideas by written signs. It is one form of aphasia. 1. The absence or loss of the power of expressing ideas by written signs. It is one form of aphasia.