rhi·zo·car·pous \|rīzō|kärpəs\adjective orrhi·zo·car·pic\-pik\ Etymology:rhizocarpous from rhiz- + -carpous; rhizocarpic International Scientific Vocabulary rhiz- + -carpic 1.: having perennial underground parts but annual stems and foliage — used of perennial herbs 2.: producing hypogeal cleistogamous flowers