• (n.) A pathological condition opposite to that of irritation; debility; want of strength; asthenia.
Ab·ir`ri·ta'tion noun (Medicine) A pathological condition opposite to that of irritation; debility; want of strength; asthenia. 
Type: Term Pronunciation: ab-ir-i-tā′shŭn Definitions: 1. Obsolete term for diminution or abolition of irritability in a part.
abirritation 1. Diminution or abolition of irritability in a body part. 2. A pathological condition opposite to that of irritation. 3. A lack or loss of strength and energy, weakness.