| rhizocarpous | <botany> Having perennial rootstocks or bulbs, but annual flowering stems; said of all perennial herbs. Origin: Gr. Root + fruit. Source: Websters Dictionary (01 Mar 1998) |
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| rhizocephala | <zoology> A division of Pectostraca including saclike parasites of Crustacea. They adhere by rootlike extensions of the head. Origin: NL, fr. Gr. Root + head. Source: Websters Dictionary (01 Mar 1998) |
| rhizoctonia | A deuteromycetous fungal genus, order agonomycetales, that is an important plant pathogen affecting potatoes and other plants. (12 Dec 1998) |
| rhizodont | <zoology> A reptile whose teeth are rooted in sockets, as the crocodile. Origin: Gr. Root +, a tooth. Source: Websters Dictionary (01 Mar 1998) |
| rhizogan | <botany> Prodicing roots. Origin: Gr. Root + -gen: cf. F. Rhizogene. Source: Websters Dictionary (01 Mar 1998) |
| rhizogen | <botany> One of a proposed class of flowering plants growning on the roots of other plants and destitute of green foliage. Source: Websters Dictionary (01 Mar 1998) |
| rhizoid | <biology> Portion of a cell or organism that serves as a basal anchor to the substratum. (23 Aug 1998) |
| rhizoma | <botany> Same as rhizome. (23 Aug 1998) |
| rhizomatous | <botany> Having the nature or habit of a rhizome or rootstock. Source: Websters Dictionary (01 Mar 1998) |
| rhizome | <plant biology> A horizontal underground stem which can send out both shoots and roots, rhizomes sometimes have thickened areas that store starch. (23 Aug 1998) |
| rhizome chaff | <botany> Mechanically chopped-up pieces of thin rhizomes spread on the ground and covered with soil so they can take root and form new plants. (23 Aug 1998) |
| rhizome cutting | <botany> Part of a thick rhizome, which may take root and form a new plant. (23 Aug 1998) |
| rhizomelia | 1. Disproportion in the length of the most proximal segment of the limbs (upper arms and thighs). 2. A disorder involving the shoulder and hip joint. Origin: rhizo-+ G. Melos, limb (05 Mar 2000) |
| rhizomeningomyelitis | Inflammation of the nerve roots, the meninges, and the spinal cord. Synonym: radiculomeningomyelitis. Origin: rhizo-+ G. Meninx, membrane, + myelon, marrow, + -itis, inflammation (05 Mar 2000) |
| rhizophaga | <zoology> A division of marsupials. The wombat is the type. Source: Websters Dictionary (01 Mar 1998) |