| rháptein |  | raph-[119] | sew, seam | ῥάπτειν (rháptein), ῤαφή (raphḗ) | raphae, raphe |
| rhábdos |  | rhabd-[120] | rod | ῥάβδος (rhábdos) | Rhabdodon, rhabdoid, rhabdom, rhabdomancy, rhabdomyolysis, rhabdomyosarcoma |
| rhákheōs |  | rhach-, rach- [121] | spine | ῥάχις, ῥάχεως (rhákhis, rhákheōs) | rachipagus, rachis, rachischisis, rhachiodont, rhachis |
| rhēgnúnai |  | rhag-, rheg-[122] | rend, tear | ῥηγνύναι (rhēgnúnai), ῥαγίζω, ῥῆξις (rhêxis), ῥῆγμα (rhêgma) | bronchorrhagia, hemorrhage, menorrhagia, regma, rhagades, rhegma, rhegmatogenous, rhexis |
| rheîn |  | rhe-[123] | flow | ῥεῖν (rheîn), ῥυτός (rhutós), ῥύσις (rhúsis), ῥεῦμα (rheûma), ῥοία (rhoía), ῥυθμός (rhuthmós) | antiarrhythmic, arrhythmia, arrhythmic, diarrhoea, dysrhythmia, endorheic, eurhythmia, eurhythmic, eurhythmy, gonorrhoea, hemorrhea, logorrhea, polyrhythm, rheology, rheometer, rheostat, rheum, rheumatic, rheumatism, rheumatoid, rheumatology, rhythm, rhythmic, rhyton |
| rhētínē |  | rhetin-[124] | resin | ῥητίνη (rhētínē), ῥητινώδης, ῥητινόω | retinite |
| rhîgos |  | rhig-[125] | chill | ῥῖγος (rhîgos) | rhigosaurus |
| rhinós |  | rhin-[126] | nose, snout | ῥίς, ῥινός (rhís, rhinós) | catarrhine, haplorhine, platyrrhine, rhinoceros, rhinophyma, rhinoplasty, strepsirrhine |
| rhíza |  | rhiz-[127] | root | ῥίζα (rhíza), ῥιζοῦν (rhizoûn), ῥίζωμα (rhízōma) | ectomycorrhiza, rhizoid, rhizomatous, rhizome, rhizomorph, rhizomorphous, rhizophagous, rhizophagy, Rhizopogon, Rhizopus, rhizosphere |
| rhô |  | rho-[128] | R, r | Ρ, ρ, ῥῶ (rhô) | rho, rhotacism, rhotacize, rhotic |
| rhódon |  | rhod-[129] | rose | ῥόδον (rhódon) | rhododendron, rhodophyte, rhodopsin, rhodophobia |
| rhómbos |  | rhomb- | spinning top | ῥόμβος (rhómbos) | orthorhombic, rhomb, rhombic, rhomboid, rhombus, rhumb |
| rhúnkhos |  | rhynch-[130] | snout | ῥύγχος (rhúnkhos) | Oncorhynchus, Rhynchobatus, rhynchophore |
