arthralgia/ɑːˈθɹæl.d͡ʒi.ə/EtymologyFrom New Latin arthralgia. By surface analysis, arthr- (“joint”) + -algia (“pain”).arthralgia means joint pain: pain in a joint, especially when not caused by arthritis. Lexicurio rates it Rare gem — a strength score of 83 out of 100.nounJoint pain: pain in a joint, especially when not caused by arthritis.