English Words: R
21,470 words · Page 294 of 430
A bacterial phytotoxin, produced by Rhizobium japonicum, that causes the root nodules of some soybean plants to become chlorotic.
A particular phytotoxin synthesized by some strains of the legume symbiont genus Bradyrhizobium and the plant pathogen Pseudomonas andropogonis
Any of various bacteria, of the genus Rhizobium, that form nodules on the roots of legumes and fix nitrogen.
A container for plant experiments in which rhizosphere soil is held separate from the bulk soil
Having perennial rootstocks or bulbs, but annual flowering stems; said of all perennial herbs.
Either of the environments occupied by plant roots: rhizoplane, rhizosphere and the surrounding soil.
The release of organic compounds from plant roots into the surrounding environment
One of a former proposed class of flowering plants growing on the roots of other plants and lacking green foliage.
A rootlike structure in fungi and some plants that acts as support and/or aids the absorption of nutrients.
An abnormal development in the taproots of some plants, especially sugar beet, characterized by fine, hairy secondary roots; it is caused by the infection of the plant with a virus transmitted by a protozoan.
A horizontal, underground stem of some plants that sends out roots and shoots (scions) from its nodes.
A disproportion of the length of the proximal limb, such as the shortened limbs of achondroplasia.
Spelling & Dictionary Insight
The English alphabetical index for the letter R contains 21,470 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 430 pages, and you are currently viewing page 294. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "R" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.