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Refractile
- of or relating to or capable of refraction; "the refractive characteristics of the eye"
Refractory-Lined
- (of furnaces) lined with material that has a high melting point
Resinlike
- resembling resin in properties or texture
Rhodesian
- of or relating to the former country of Rhodesia (now Zimbabwe)
Rocket-Propelled
- propelled by (or as if propelled by) a rocket engine
Romansh
- of or relating to the Romansh language
- the Rhaeto-Romance language spoken in southeastern Switzerland; it is an official language of Switzerland
Rumansh
- of or relating to the Romansh language
- the Rhaeto-Romance language spoken in southeastern Switzerland; it is an official language of Switzerland
Romanticist
- belonging to or characteristic of Romanticism or the Romantic Movement in the arts; "romantic poetry"
- an artist of the Romantic Movement or someone influenced by Romanticism
- someone who indulges in excessive sentimentality
Romanticistic
- belonging to or characteristic of Romanticism or the Romantic Movement in the arts; "romantic poetry"
Ruminant
- related to or characteristic of animals of the suborder Ruminantia or any other animal that chews a cud; "ruminant mammals"
- any of various cud-chewing hoofed mammals having a stomach divided into four (occasionally three) compartments