asoma

a·so·ma

, pl.

a·so·ma·ta

(ā-sō'mă, -sō'mă-tă), A fetus with only a rudimentary body. [G. a- priv. + sōma, body]

asoma

(ā″sō′mă) [ ¹an- + soma] A deformed fetus with an imperfectly formed trunk and head.