I. |inə|d(y)ünə̇t, (ˈ)i|najən- adjective
Etymology: in- (I) + Latin adunatus, past participle of adunare to unite, from ad- + unus one — more at one
: not united ; specifically : having the arms completely free from the calyx — used of a crinoid
II. noun
( -s )
: an inadunate crinoid