资料来源 : Webster's Revised Unabridged Dictionary (1913)

Adelocodonic \A*del`o*co*don"ic\, a. [Gr. ? invisible + ? a
   bell.] (Zo["o]l.)
   Applied to sexual zooids of hydroids, that have a saclike
   form and do not become free; -- opposed to {phanerocodonic}.