HERBA'CEOUS, adjective [Latin herbaceus.] Pertaining to herbs. herbaceous plants are such as perish annually down to the root; soft, succulent vegetables. So, a herbaceous stem is one which is soft, not woody. herbaceous applied to animals by Derham, is not authorized. [See Herbivorous.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI