| radius |
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noun (radii, pl2=radiuses)
- (anatomy) The long bone in the forearm, on the side of the thumb.
- (geometry) A line segment between any point on the circumference of a circle and its center/centre.
- (geometry) The length of this line segment.
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| red admiral |
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noun
- A bright orange-and-red butterfly, Vanessa atalanta.
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| red ant |
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noun
- an ant of the colour red, usually the Pharaoh ant
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| reduviid |
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noun
- any member of the Reduviidae family of insects, especially the assassin bug
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| replete |
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adjective
- abounding, Abounding.
- They found the jungle with life of all sorts.
- Filled to the point of bursting.
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| reproductive |
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adjective
- of or related to reproduction
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| rhinoceros beetle |
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noun
- any of various tropical beetles, mostly of the genus Dynastes, having horns on the head and thorax; a pest on coconuts
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| roach |
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noun (plural roaches)
- a small freshwater fish related to the carp.
- (slang) the butt of a marijuana cigarette.
- a cockroach.
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| rove beetle |
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noun
- Any of various carnivorous or scavenging beetles of the family Staphylinidae that are often found in decaying matter and have slender bodies and short wing covers.
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| royal jelly |
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noun
- A substance secreted by bees to aid in the development of immature or young bees, called royal jelly because it is supplied in extra measure to those young that will become queen bees.
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