myocoel
/ˈmʌɪə(ʊ)siːl/(also myocele, myocoele) Embryology and Zoology
noun
In vertebrate embryos: a cavity in the centre of an early myotome. Also: a compartment of the coelom associated with each myotome in adult amphioxus (Branchiostoma) and other cephalochordates.
Origin
Late 19th century; earliest use found in Quarterly Journal of Microscopical Science. From myo- + -coele, after German Myocöl.