Source : Webster's Revised Unabridged Dictionary (1913)

Angiomonospermous \An`gi*o*mon`o*sper"mous\
   ([a^]n`j[i^]*[-o]*m[o^]n`[-o]*sp[~e]r"m[u^]s), a. [Angio- +
   monospermous.] (Bot.)
   Producing one seed only in a seed pod.