1884 P. McBride Guide to Study of EarDis. Plate I (heading)Long process of the Incus, incudo-stapedial joint and posterior ramus of the stapes. 
1894 Gould Dict. Med. 608/1Incudo-... In composition, signifying relationship to the incus. I-malleal... I.-orbicular... I.-stapedial... I.-tympanic. 
1908 Practitioner Jan. 123 The lax membrane resting upon the inner tympanic wall and incudo-stapedial articulation. 
1943 Fischer & Wolfson Inner Ear v. 191The capsule of the incudo⁓malleolar joint is divided . [ in the operation described] 
1967 Coll. PapersSurg. Mayo Clinic LVIII. 373The most common ossicular injury sustained during stapedectomy is dislocation of the incudomalleal joint. 
ORIGIN: from Latin  incud-  incus -o- 
incudo-
combining form 
see incud-
see incud-